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Indonesia, officially the Republic of Indonesia, is a country in and , between the and oceans. Comprising over 17,000 islands, including , , , and parts of and , Indonesia is the world's largest archipelagic state and the 14th-largest country by area, at . With over 280 million people, Indonesia is the world's fourth-most-populous country and the most populous Muslim-majority country. Java, the world's most populous island, is home to more than half of the country's population.

Indonesia operates as a presidential republic with an elected legislature and consists of 38 provinces, nine of which have special autonomous status. , the largest city, is the world's second-most-populous urban area. Indonesia shares with Papua New Guinea, , and , as well as with , Peninsular Malaysia, , , the , , , and . Despite its large population and densely populated regions, Indonesia has vast areas of wilderness that support one of the world's highest levels of biodiversity.

The Indonesian archipelago has been a valuable region for since at least the seventh century, when Sumatra's and later Java's kingdoms engaged in with entities from and the Indian subcontinent. Over the centuries, local rulers assimilated foreign influences, leading to the flourishing of Hindu and Buddhist kingdoms. traders and scholars later brought Islam, and European powers fought one another to monopolise trade in the Spice Islands of during the Age of Discovery. Following three and a half centuries of Dutch colonialism, Indonesia proclaimed its independence on 17 August 1945. Since then, it has faced challenges such as separatism, corruption, and natural disasters, alongside democratisation and rapid economic growth.

Indonesian society comprises hundreds of ethnic and linguistic groups, with being the largest. The nation's identity is unified under the motto Bhinneka Tunggal Ika, defined by a national language, cultural and religious pluralism, a history of , and rebellion against it. A newly industrialised country, Indonesia's economy ranks as the world's 17th-largest by nominal GDP and the 7th-largest by PPP. As the world's third-largest democracy and a in global affairs, the country is a member of several multilateral organisations, including the , World Trade Organization, G20, , and a founding member of the Non-Aligned Movement, , East Asia Summit, APEC and the Organisation of Islamic Cooperation.


Etymology
The name Indonesia derives from the words Indos]] (Ἰνδός) and nesos]] (νῆσος), meaning "Indian islands".
(1996). 9789625930787, Periplus Editions.
The name dates back to the 19th century, far predating the formation of independent Indonesia. In 1850, George Windsor Earl, an English , proposed the terms Indunesians—and, his preference, Malayunesians—for the inhabitants of the "Indian Archipelago or Malay Archipelago". In the same publication, one of his students, James Richardson Logan, used Indonesia as a synonym for Indian Archipelago. Dutch academics writing in East Indies publications were reluctant to use Indonesia. They preferred Malay Archipelago (); the Netherlands East Indies (Nederlandsch Oost Indië), popularly Indië; the East (de Oost); and Insulinde.

After 1900, Indonesia became more common in academic circles outside the Netherlands, and native nationalist groups adopted it for political expression. of the University of Berlin popularised the name through his book italic=yes. The first native scholar to use the name was Ki Hajar Dewantara, who established a press bureau in the Netherlands, Indonesisch Pers-bureau, in 1913.


History

Early history
The Indonesian archipelago has been inhabited since the time of or "," with fossils dating back 2 million to 500,000 BCE. cited in Fossils of Homo floresiensis, found on Flores, date around 700,000 to 60,000 BCE, while arrived around 43,000 BCE. Sulawesi and Borneo are home to the world's oldest known , dating back 40,000 to 60,000 years, and megalithic sites such as western Java's , Sulawesi's Lore Lindu, as well as Sumatra's Nias and Sumba reflect early human settlements and ceremonial practices.
(2025). 9786020818252, Pusat Penelitian Arkeologi Nasional. .

Around 2,000 BCE, Austronesian peoples began arriving in Southeast Asia from the island of , gradually displacing native to the far eastern part of the archipelago as they spread east, and would eventually form the majority of Indonesia's modern population. Favourable agricultural conditions and advancements like by the 8th century BCE enabled the growth of villages and kingdoms by the first century CE. The archipelago's strategic location fostered inter-island and international exchange with civilisations from the Indian subcontinent and mainland China, profoundly influencing Indonesian history and culture through trade.

By the 7th century CE, the naval kingdom thrived on trade, adopting Hindu and Buddhist influences. The 8th to 10th centuries saw the rise and decline of the Buddhist and Hindu dynasties, leaving monumental legacies like the and temples.

(2025). 9781315225340, Taylor & Francis Group.
After the failed Mongol invasion of Java in the late 13th century,
(2025). 9789814517829, ISEAS Publishing.
the Hindu kingdom rose to dominate much of the archipelago under 's leadership—a period often called the "Golden Age" of Indonesian history. Islam arrived in the 13th century in northern Sumatra, and following gradual adoption in other islands, it became the dominant religion in Java and Sumatra by the 16th century, blending with pre-existing traditions to form a distinct Islamic culture, particularly in Java.


Colonial era
In 1512, Europeans began arriving in the archipelago, led by Portuguese traders under Francisco Serrão, to seek a monopoly of the lucrative in the . Dutch and British traders soon followed, with the former establishing the Dutch East India Company ( Verenigde Oostindische Compagnie, VOC) in 1602,
(1997). 9780511666841, Cambridge University Press.
which eventually became the dominant European power for almost two centuries. After the VOC's dissolution in 1799 during the French Revolutionary Wars, the Dutch East Indies was established as a nationalised colony, marking the beginning of formal colonial rule by the Netherlands. Over the next century and a half, Dutch control over the archipelago was tenuous, as they faced continuous rebellions from local leaders like Prince in central Java, in central Sumatra, in Maluku, and . Dutch dominance only extended to Indonesia's modern boundaries in the early 20th century, with the establishment of Dutch posts in .
(2025). 9781412812061, Transaction Publishers. .

During World War II, the Japanese invasion and occupation of the Indies ended Dutch rule and encouraged Indonesia's independence movement.Robert Elson, The idea of Indonesia: A history (2008) pp 1–12 Only two days after Japan's surrender in August 1945, and issued the Proclamation of Indonesian Independence, and they became the country's first president and vice-president, along with as Prime Minister. The Netherlands attempted to re-establish their rule, prompting the start of Indonesia's war of independence against the Dutch. The conflict lasted until 1949, when the Dutch recognised Indonesian independence in the Dutch–Indonesian Round Table Conference following international pressure. Despite political, social, and sectarian divisions, Indonesians found unity in their fight for independence.


Post-World War II
Sukarno shifted Indonesia from democracy to authoritarianism and maintained power by balancing the opposing forces of political Islam, the military, and the Communist Party of Indonesia (PKI). Tensions between the latter two culminated in an attempted coup in 1965, leading to a violent anti-communist purge led by the Army's Major General that killed at least 500,000 people and imprisoned around a million more.; The PKI was blamed for the coup and destroyed, weakening Sukarno's power. Suharto capitalised on this, becoming President in 1968 and establishing a US-backed "New Order" administration,David Slater, Geopolitics and the Post-Colonial: Rethinking North–South Relations, London: Blackwell, p. 70 which fostered foreign direct investment and drove three decades of substantial economic growth.

Indonesia was the country worst affected by the 1997 Asian financial crisis,

(1998). 9780471834502, Willey.
which brought out widespread discontent with the New Order's corruption and political suppression and ultimately ended Suharto's rule. In 1999, East Timor seceded after a controversial 25-year occupation following Indonesia's 1975 invasion. Since 1998, Indonesia has strengthened democracy by granting regional autonomy and holding the first direct presidential election in 2004.

Political, economic and social instability and terrorism were persistent in the 2000s. The economy has performed strongly since 2007, although corruption remains a chronic issue.

(2019). 9789462528192, Atlantis Press.
Relations among the diverse population are mostly harmonious, but sectarian discontent and violence remain problematic in some areas.
(2019). 9781925835090, Monash University Publishing.
A political settlement to a separatist insurgency in Aceh was achieved in 2005.


Geography
The southernmost country in Asia, Indonesia lies between latitudes 11°S and 6°N and longitudes 95°E and 141°E. It is also a transcontinental country, spanning Southeast Asia and Oceania and is the world's largest archipelagic state, stretching from east to west and from north to south.
(1993). 9780844407906, Federal Research Division, Library of Congress.
The exact number of Indonesia's islands varies according to different sources, usually ranging from 13,000 to 17,000, with around 922 permanently inhabited. Its five largest islands are , , (shared with Brunei and Malaysia), , and (shared with Papua New Guinea).

The country features diverse topography, including towering mountains, vast lakes, and extensive river systems. At , is Indonesia's highest peak, while in Sumatra, covering , is the largest lake. The country's major rivers, primarily in Kalimantan, include , and , serving as vital transportation and communication routes for remote riverine communities.


Climate
Indonesia's equatorial position ensures a relatively stable climate year-round, characterised by two main seasons: the from May to October and the from November to April, with no extremes of summer and winter. The climate is predominantly tropical rainforest, with cooler climates in higher areas over above sea level.
(2023). 9789819936755, Springer, Singapore.
The oceanic climate (Köppen Cfb) prevails in highland areas adjacent to rainforest climates, with uniform precipitation year-round. In highland areas near the tropical and tropical savanna climates, the subtropical highland climate (Köppen Cwb) is more pronounced during the dry season. There is a variation in rainfall patterns, with regions like western Sumatra, Java, and the interiors of Kalimantan and Papua receiving more precipitation, while areas closer to Australia, such as Nusa Tenggara, are drier. The warm waters covering 81% of Indonesia's area keep land temperatures stable, with high humidity (70–90%) and moderate, predictable winds influenced by monsoon cycles. Major weather hazards include strong currents in straits, such as the and , rather than typhoons or storms.

Several studies consider Indonesia to be at severe risk from the projected effects of climate change, including a temperature rise of by 2050 due to unreduced emissions. This warming could intensify droughts, disrupt rainfall patterns critical to agriculture, and increase occurrences of food shortages, diseases, and wildfires. Rising sea levels would also threaten densely populated coastal regions, and impoverished communities are expected to be disproportionately affected by climate change.


Geology
Indonesia's geology is shaped by its position on the Pacific Ring of Fire, where the Indo-Australian and subduct beneath the , where they melt at about deep. This tectonic activity makes the region highly unstable with volcanoes and earthquakes. There are around 130 active volcanoes in the country, with a chain of them stretching from through , and the Lesser Sunda Islands, and the of to northeastern . While has made agriculture unpredictable in some areas, it has also created fertile soils that have historically sustained the high population densities of Java and Bali. Between 1972 and 1991, Java experienced a total of 29 volcanic eruptions.
(2025). 9780761476313, Marshall Cavendish.

The archipelago has witnessed several powerful volcanic eruptions with global repercussions. A massive supervolcano erupted with a maximum volcanic explosivity index (VEI) of 8 at present-day around 74,000 BCE, causing a global , cooling the climate, and possibly influencing human evolution. The eruption of Mount Tambora in 1815, the most recently confirmed VEI-7 eruption, made much of the Northern Hemisphere without summer in 1816. The eruption of Mount Krakatoa in 1883, a VEI-6 eruption, produced the loudest sound in recorded history, with additional effects around the world years after the event. Recent catastrophic disasters due to seismic activity include the 2004 Indian Ocean earthquake and the 2018 Sulawesi earthquake.


Biodiversity
Recognised by Conservation International as one of 17 megadiverse countries, Indonesia hosts one of the world's highest levels of biodiversity due to its tropical climate, large size, and archipelagic geography. The country's flora and fauna include a mix of Asian and Australasian species. The islands (Sumatra, Java, and Borneo) have a wealth of Asian fauna as they were once linked to mainland Asia, while Sulawesi, Lesser Sunda Islands, Maluku and Papua evolved unique ecosystems due to their separation from the continental landmasses.
(1996). 9789625930756, Periplus Editions Ltd..
(1996). 9789625930763, Periplus Editions Ltd..
In terms of total species, the Indonesian archipelago ranks among the highest globally.

The country also boasts of coastline, featuring diverse sea and coastal ecosystems, such as dunes and mangroves, as well as coral reefs in the that harbour the highest diversity of coral reef fish globally, with over 2,000 species. The , described by English naturalist Alfred Russel Wallace, marks the biogeographical divide between Asian and Australasian species, with the region between the Wallace and (called ) hosting unique biodiversity as described in Wallace's 1869 book, The Malay Archipelago.

(2025). 9789625936451, Periplus Editions.
(1997). 9780349110400, Abacus Travel.
Eighty-three percent of Southeast Asia's old-growth forests are located in Indonesia.

Indonesia faces severe environmental challenges due to extensive deforestation, peatland destruction, and over-exploitation of resources, driven by industries such as logging, plantations and agriculture since the 1970s, and in most recent years, palm oil.

(2006). 9789791518802, Forest Peoples Programme.
Forest cover declined from 87% in 1950 to 48% in 2022, highlighting the country as a leading forest-based emitter of greenhouse gases. These issues are often given a lower priority due to high poverty levels and weak, under-resourced governance. They also threaten indigenous and endemic species, with the International Union for Conservation of Nature (IUCN) listing many as critically endangered, such as the , Sumatran orangutan, and . Environmental degradation has prompted some academics to label these activities as ecocide.
(2023). 9782384760459, Atlantis Press.


Conservation
As of 2023, Indonesia has designated 21.3% of its land as protected areas and aims to align its strategy with the 2022 Kunming-Montreal Global Biodiversity Framework. Additionally, 411 marine reserves account for 9% of the country's maritime area, with a target to increase this to 30% by 2045. However, a recent study highlights that the current efforts are off track and existing marine reserves are poorly managed. Approximately 390 marine areas are managed by government bodies, communities, and other sectors, with potential for classification as other effective area-based conservation measures (OECMs), though there is no national mechanism for reporting them.

Indonesia's conservation framework includes 55 national parks, covering around 9% of the country's surface area. Among these, nine are predominantly marine parks, with six recognised as World Heritage Sites, seven as part of the World Network of Biosphere Reserves and five wetlands of international importance under the 1971 Ramsar Convention. Notably, Indonesia has over 100 marine protected areas spanning 15.7 million hectares as of 2012, and these are managed by the Ministry of Forestry and local governments. Previous targets included reaching 20 million hectares by 2020 under former President Susilo Bambang Yudhoyono's 2009 initiative and 10% of territorial waters, or 31 million hectares.


Government and politics
Indonesia is a presidential republic. Following the fall of the New Order in 1998, sweeping amendments to the Constitution of Indonesia restructured the state's executive, legislative, and judicial branches while maintaining a balance between its framework and greater decentralisation to regional governments. The president serves as head of state, head of government, and commander-in-chief of the Indonesian National Armed Forces ( Tentara Nasional Indonesia, TNI) and oversees domestic and foreign policies. Presidents may serve up to two consecutive five-year terms.(2002), The Fourth Amendment of 1945 Indonesia Constitution, Chapter III – The Executive Power, Article 7.

The People's Consultative Assembly ( Majelis Permusyawaratan Rakyat, MPR) is Indonesia's highest representative body, responsible for amending the constitution, inaugurating and impeaching the president, and formalising state policies.Chapter II, Article 3, 3rd Clause of the 1945 Constitution. It consists of two houses: the People's Representative Council ( Dewan Perwakilan Rakyat, DPR), which has 580 members and handles legislation and executive oversight, and the Regional Representative Council ( Dewan Perwakilan Daerah, DPD), which has 152 members and focuses on regional matters. Since 1998, reforms have significantly enhanced the DPR's governance functionality. The DPD represents the interests of the diverse regions of Indonesia.Chapter VIIA, Article 22D of the 1945 Constitution.

Indonesia’s judiciary includes several key institutions. The Supreme Court ( Mahkamah Agung) is the highest judicial authority, handling final appeals and case reviews. The Constitutional Court ( Mahkamah Konstitusi) addresses constitutional and political matters, while the country's Religious Court ( Pengadilan Agama) oversees personal law cases. Additionally, the Judicial Commission ( Komisi Yudisial) monitors judicial performance.


Parties and elections
Since 1999, Indonesia has operated under a multi-party system, wherein no single political party has secured an outright majority of seats in the legislative elections. Political parties are generally classified into two categories: secular and nationalist parties, which include the Indonesian Democratic Party of Struggle (PDI-P), the Party of the Functional Groups ( Golkar), and the Great Indonesia Movement Party ( Gerindra Party); and Islamic parties, such as the centrist National Awakening Party (PKB) and the Prosperous Justice Party (PKS). Indonesia's political spectrum is characterised by a preference for pragmatism over ideological orthodoxy to fit the prevailing political climate, and by what are called cartel parties, with extensive power-sharing among parties and limited accountability to voters. Unlike many other democracies, pre-election party alliances are the norm in Indonesia.

In 1955, the first general election was held to elect members of the DPR and the Constitutional Assembly ( Konstituante). At the most recent elections in 2024, eight political parties secured representation in the DPR, with a parliamentary threshold of 4% of the national vote. At the national level, Indonesians did not elect a President until 2004. Since then, the President has been elected for a five-year term, as are the party-aligned members of the DPR and the non-partisan DPD. Beginning with the 2015 local elections, elections for governors and mayors have occurred on the same date. In 2013, the Constitutional Court ruled that legislative and presidential elections would be held simultaneously, starting in 2019.


Administrative divisions
Indonesia is divided into several administrative levels. At the first level are the provinces, each with a legislature ( Dewan Perwakilan Rakyat Daerah, DPRD) and an elected governor. The number of provinces has grown from 8 in 1945 to 38 today, with the most recent one, Southwest Papua, established in 2022. The second level includes regencies ( kabupaten) and cities ( kota), led by regents ( bupati) and mayors ( walikota), respectively, both supported by legislatures ( DPRD Kabupaten/Kota). Below this are districts ( kecamatan, called distrik in Papua), and the fourth level comprises villages, known by various names like desa, kelurahan, kampung, nagari (in West Sumatra), or gampong (in Aceh). Villages are subdivided into community groups ( rukun warga, RW) and neighbourhood groups ( rukun tetangga, RT), with further subdivisions like hamlets ( dusun or dukuh) in Java.

The village level is the lowest administrative unit but significantly influences daily life. Village governments are led by elected heads ( lurah or kepala desa) and handle local matters. Since the start of regional autonomy implementation in 1999, regencies and cities have become key administrative units responsible for most government services. Nine provinces (Aceh, Jakarta, Yogyakarta, and the six provinces in Papua) are granted a special autonomous status ( otonomi khusus) from the central government. A conservative , Aceh has the right to apply aspects of sharia law. Yogyakarta uniquely retains its pre-colonial monarchy, with its Sultan and serving as governor and vice governor, while the provinces in Papua are granted special autonomy to address separatist tensions, accelerate development, and provide Papuans with greater self-governance, aiming to integrate the region more equally with the rest of Indonesia.


Foreign relations
Indonesia follows an "independent and active" ( bebas aktif) foreign policy, a term coined in 1948 by the country's first vice-president, . With this policy, the country aims to navigate great power politics, maintain autonomy, and avoid alignment with major powers. The President holds the ultimate authority in determining foreign policy directions,Chapter III - The Executive Power, Articles 4, 11 and 13 of the Amended 1945 Constitution while the Foreign Affairs Ministry is responsible for formulating and implementing foreign policy. Meanwhile, the Parliament (DPR) provides oversight and ratifies international treaties. Indonesia is considered to be a in global politics.

As the largest country in Southeast Asia and a founding member of the Association of Southeast Asian Nations (), Indonesia considers ASEAN the cornerstone of its foreign policy. Indonesia has actively supported Palestine while refraining from formal diplomatic relations with Israel. However, the two countries maintain discreet ties. Since the start of the 21st century, Indonesia has built deep relations with China, primarily relating to investments in infrastructure and trade, while at the same time maintaining a strategic partnership with the United States, focusing on economic cooperation, security, and counterterrorism efforts.

Indonesia has been a member of the United Nations since 1950 and is a founding member of the Non-Aligned Movement (NAM), the Organisation of Islamic Cooperation (OIC) and the East Asia Summit.

(2015). 9781137397416, Springer.
Indonesia is also a signatory to the ASEAN Free Trade Area agreement, the , and the World Trade Organization (WTO). Indonesia has been a humanitarian and development aid recipient since the late 1960s, but it recently established its own foreign aid agency in 2019.
(2024). 9782384762354, Atlantis Press.
The country also plays a role in maintaining international peace and security, deploying thousands of military and police personnel to multiple United Nations peacekeeping missions since 1957, including in Lebanon, the , and Mali.


Military
The Indonesian National Armed Forces (TNI) consists of the (TNI-AD), (TNI-AL) (including the Marine Corps), and Air Force (TNI-AU), with active personnel numbering approximately 300,400 in the Army, 65,000 in the Navy, and 30,100 in the Air Force.
(2023). 9781032508955, . .
Established during the Indonesian National Revolution, the TNI initially engaged in guerrilla warfare alongside informal militias. Its territorial structure focuses on maintaining domestic stability and deterring foreign threats. Though political reforms in 1998 removed TNI's formal legislative role, it continues to wield political influence, albeit reduced from .
(1998). 9780429501579, Routledge.
Defence spending in 2023 was 0.7% of GDP, with controversies surrounding military-owned commercial ventures.

Since independence, Indonesia has struggled to maintain unity against separatist movements and insurgencies, notably in Aceh and . While the former ended peacefully in 2005, the latter has continued amid the implementation of regional autonomy and well-documented human rights abuses by the TNI, including extrajudicial killings, forced disappearances and restrictions on freedom of expression, as reported by Amnesty International, Human Rights Watch, and the UNHRC. Indonesia's historical military engagements include conflicts with the Netherlands over Dutch New Guinea, opposition to the British-backed creation of Malaysia ( Konfrontasi), the anti-communist mass killings, and the invasion of East Timor, which was Indonesia's largest military operation.Indonesia. Department of Foreign Affairs. Decolonization in East Timor. Jakarta: Department of Information, Republic of Indonesia, 1977. .

(1984). 9780862322281, Zed Books.


Law enforcement and human rights
Law enforcement in Indonesia is primarily handled by the Indonesian National Police (POLRI), supported by other agencies under the President, ministries, or state-owned companies. These agencies perform specific policing duties and are supervised and trained by the POLRI, which serves as the country's national civilian police force responsible for maintaining law and order.

Indonesia has a documented history of racial discrimination and conflicts, particularly against Chinese Indonesians and Papuans, which have at times escalated into violence, notably the anti-Chinese riots in 1998 and the ongoing since 1962. Other minorities, such as the LGBTQ, also face challenges, where a rapid surge of anti-LGBTQ rhetoric has been observed since the mid-2010s after relative obscurity on the topic in the decades prior. Discrimination against religious minorities is also common.

Issues regarding free speech and the right to assembly are prevalent despite constitutional protections.Chapter XA, Article 28E, 3rd Clause of the Amended 1945 Constitution. Laws such as the Electronic Information and Transactions ( Informasi dan Transaksi Elektronik, ITE) Law are often used to criminalise dissent, with critics and activists facing charges for expressing opinions online. Peaceful protests, particularly those addressing sensitive issues such as indigenous rights in Papua or environmental concerns, are frequently met with a heavy-handed response from law enforcement. The government occasionally imposes restrictions on assembly permits, particularly for those critical of authorities or advocating rights.


Economy
Indonesia operates a where the private sector and the government play significant roles. As the only G20 member state in Southeast Asia, it has the region's largest economy and is classified as a newly industrialised country. In 2024, its nominal GDP was , ranking 17th globally, while its GDP at purchasing power parity (PPP) was , ranking 7th. Per capita GDP in PPP is , while nominal per capita GDP is . In 2021, services dominate the economy in terms of employment (49.2%), followed by agriculture (28.9%) and industry (21.7%), while in terms of share of GDP in 2022, both services and industry dominate (roughly 41% each), followed by manufacturing (18.3%) and agriculture (12.4%).

The economic structure has shifted significantly over time, transitioning from agriculture in the 1950s and 1960s to gradual industrialisation and urbanisation from the late 1960s to the 1980s. Falling oil prices in the 1980s prompted diversification into manufactured exports, resulting in substantial economic growth (the GDP rose at an average rate of 7.1%) and poverty reduction from 40% to 11%. However, the economy took a severe hit during the Asian economic crisis in the late 1990s, when the GDP fell by 13%, inflation reached 78%, and GDP grew by only 0.8% in 1999. Recovery began in the early 2000s, with prudent banking regulations, better monetary and fiscal policies and flexible exchange rates, resulting in growth rates between 4% and 6% since 2004. These factors, coupled with strong domestic consumption, helped Indonesia weather the 2008 financial crisis. The COVID-19 pandemic in the early 2020s caused a recession, but the economy rebounded within a year.

Indonesia's abundant natural resources, including nickel, coal, and petroleum, dominate its export portfolio. It imports refined and crude petroleum and vehicle parts, with major trade partners including China, the United States, Japan, Singapore, India, Malaysia, South Korea, and Thailand. Owing to plentiful rainfall, sunshine and fertile soil, Indonesia is a major agricultural country, ranking among the leading producers of palm oil, rubber, coffee, tea, cassava, rice, wheat, coconut oil, and tobacco. Despite these resources and decades of development, disparities in wealth, employment and economic opportunities persist between western and eastern Indonesia.


Tourism
Tourism plays a significant role in Indonesia's economy, contributing to GDP and drawing 11.6 million international visitors in 2023. Australia, Singapore, Malaysia, China, and India are among the top five sources of visitors to Indonesia.

The tourism industry thrives on Indonesia's natural and cultural wealth. The country boasts a well-preserved natural ecosystem, with rainforests covering 57% of its land area (225 million acres). Popular natural destinations include the rainforests of Sumatra and Kalimantan, particularly the Orangutan wildlife reserves. Indonesia also has one of the world's longest coastlines, stretching . Cultural tourism features prominently, with attractions like the ancient and temples,

(2025). 9788776941734, NUS Press Singapore.
the highlands, and the cultural festivals of .

Indonesia is home to ten UNESCO World Heritage Sites, including Komodo National Park and the . Additionally, 21 other sites are on the tentative list, such as Bunaken National Park and the Raja Ampat Islands. Historical tourism is also a major draw, with attractions like the colonial heritage of the Dutch East Indies in Jakarta and Semarang, as well as the royal palaces of Pagaruyung and .


Science and technology
Government spending on research and development is relatively low at 0.28% of GDP in 2020. Despite being ranked 54th among 133 countries on the 2024 Global Innovation Index, the country performs above expectations for its upper middle-income status.
(2025). 9789280536812, World Intellectual Property Organization. .
Historical innovations include terasering, the terracing techniques for rice cultivation, and the boats of the and . In the 1980s, Tjokorda Raka Sukawati developed the road construction technique that is now used internationally. Indonesia also produces passenger trains and freight wagons through its state-owned Indonesian Railway Industry ( Industri Kereta Api, INKA), which exports trains abroad.

Indonesia has a history of manufacturing military and commuter aircraft and is the only country in Southeast Asia to do so. Its state-owned aerospace company, Indonesian Aerospace ( PT. Dirgantara Indonesia, PTDI), has supplied components to and and co-developed the CN-235 with Spain's CASA. Former President B. J. Habibie, an aerospace engineer before getting into politics, played a key role in advancing the country's aerospace research. Recently, Indonesia has been collaborating with South Korea on the 4.5-generation fighter jet KAI KF-21 Boramae.

(2021). 9788932201481, Korea Institute for International Economic Policy.

Indonesia's space program, managed by the National Institute of Aeronautics and Space ( Lembaga Penerbangan dan Antariksa Nasional, LAPAN), launched its first satellite ( ) in 1976 with assistance from the United States, making Indonesia the first developing country with a satellite system. As of 2024, Indonesia has launched 19 satellites for communication and other purposes. Recently, the government licensed to provide internet connectivity to rural and underserved regions.


Infrastructure

Transport
Indonesia's transport system reflects its archipelagic geography and population distribution, which is heavily concentrated on Java. As of 2022, the predominant road network spanned , including , which operates the world's longest bus rapid transit system. Common urban transport includes like bajaj and becak and shared taxis such as angkot and minibuses.

Railways are primarily located in Java and parts of Sumatra and Sulawesi, serving freight and passenger transport, including commuter and inter-city rail services like those in and Yogyakarta. In the late 2010s, rapid transit systems were introduced in Jakarta and , with more planned for other cities. In collaboration with China, Indonesia inaugurated its first high-speed rail ( Whoosh) in 2023, connecting Jakarta and . It was the first such system in Southeast Asia and the Southern Hemisphere.

Air and sea transport also play significant roles. Soekarno–Hatta International Airport, Indonesia's largest, served 54 million passengers in 2024, followed by Ngurah Rai and Juanda International Airports. , the national flag carrier since 1949, is one of the world's leading airlines and a member of the global airline alliance . The Port of Tanjung Priok, the country's busiest and most advanced, handles over 50% of Indonesia's trans-shipment cargo traffic.


Energy
Indonesia is a major energy producer and consumer, producing and consuming worth of energy in 2023. The country's total installed power generation capacity in 2022 is approximately 83.8 gigawatts (GW), primarily from coal (61%). Other significant sources include natural gas, oil, and renewables such as geothermal, hydropower, and solar. The state-owned State Electricity Company ( Perusahaan Listrik Negara, PLN) holds a monopoly on electric power distribution in the country.

Indonesia's energy mix is still dominated by non-renewable sources, with coal being the majority, followed by natural gas and oil. Renewables, including geothermal (5%), hydropower (7%), and solar (1%), make up a smaller but growing share. The potential for renewable energy is immense, particularly geothermal, where the country ranks as one of the world's largest producers. The country is one of the world's largest producers and exporters of coal and a significant exporter of liquefied natural gas (LNG).

The government plans to transition towards greener energy sources and achieve net-zero carbon emissions by 2050. In the latest energy plan in early 2025, the government aims for a 71-gigawatt expansion in power capacity by 2034, with a focus on renewables. However, the country has insufficient infrastructure for renewable energy, faces difficulties in providing electricity access to remote areas, and continues to rely heavily on coal.

(2017). 9789295111196


Demographics
According to the 2020 census, Indonesia had a population of 270.2 million, making it the world's fourth most populous country. The population grew at a rate of 1.25% between 2010 and 2020. Java, the world's most populated island, is home to 56% of Indonesia's population. The overall population density stands at , but Java's density is significantly higher, reaching . Indonesia's first post-colonial census in 1961 recorded a population of 97 million, and projections estimate it will grow to 321 million by 2050. The country maintains a relatively young demographic, with a median age of 31.5 years as of 2024.

Indonesia's population distribution is highly uneven, reflecting its diverse geography and varying levels of development. It ranges from the bustling of Jakarta to remote and uncontacted tribes in Papua. As of 2023, approximately 59% of Indonesians live in urban areas, with Jakarta as the country's and the second-most populous urban area globally, housing over 34 million people. Additionally, about 8 million Indonesians reside overseas, with large communities in Malaysia, the Netherlands, Saudi Arabia, Singapore, Taiwan, Hong Kong, the United States, the United Kingdom, and Australia.

(2017). 9789814786928, ISEAS Publishing. .


Ethnic groups and languages
Indonesia is home to around 600 distinct native ethnic groups, predominantly descended from Austronesian peoples speaking Proto-Austronesian languages, likely from modern-day Taiwan. The , who inhabit eastern Indonesia, represent another significant ethnic grouping.
(1994). 9780500341322, Thames and Hudson Ltd..
(2025). 9786021289198, Direktorat Sejarah, Direktorat Jenderal Kebudayaan, Kementerian Pendidikan dan Kebudayaan. .
The Javanese, making up 40% of the population,
(2025). 9789814519878, Institute of Southeast Asian Studies. .
are the largest ethnic group and the politically dominant one,
(2025). 9780415297370, Routledge.
primarily residing in central and eastern Java, with sizeable numbers in other provinces. Other major groups include the , Malay, , , , Minangkabau, and . A sense of Indonesian nationhood exists alongside strong regional identities.

The official language, Indonesian, is a variant of based on its prestige dialect, which became the archipelago's over the course of centuries. It was first and gained official status in 1945, following independence, under the name Bahasa Indonesia, and has since been widely adopted due to its use in education, media, business, and governance. While nearly all Indonesians speak Bahasa, most also speak one of over 700 local languages, often as their . These are predominantly from the Austronesian family, with over 270 in eastern Indonesia. Javanese is the most widely spoken local language and holds co-official status in Yogyakarta.

The and other European-descended populations like the , though significant during colonial times, always represented a small fraction of the population, numbering only around 200,000 in 1930. The Dutch language never gained substantial traction due to the Dutch colonial focus on commerce rather than cultural integration.

(2025). 9780521885867, Cambridge University Press.
Dutch fluency exists today in small numbers among some older generations and legal professionals, as specific legal codes remain available only in that language.


Religion
Indonesia officially recognises six religions: Islam, Protestantism, Roman Catholicism, Hinduism, Buddhism, and Confucianism,
(2017). 9781107183346, Cambridge University Press.
while acknowledging religious freedom in the constitutionChapter XA, Article 28E, 1st Clause of the 1945 Constitution. and indigenous religions for administrative purposes. As of 2023, 87.1% of the population (248 million Indonesians) are Muslims, making Indonesia the world's most populous Muslim-majority country, with Sunnis constituting 99% of the Muslim population. Christians, comprising 10% of the population, form majorities in several eastern provinces, while Hindus and Buddhists are primarily Balinese and Chinese Indonesians, respectively.
(1997). 9789625930282, Periplus Editions.
(2025). 9789812308351, Institute of Southeast Asian Studies.

Before the arrival of major world religions, Indonesia's natives practised and dynamism, worshipping ancestral spirits and believing in the supernatural ( ) inhabiting natural elements, such as large trees, mountains and forests.

(2025). 9781576077702, ABC-CLIO.
Such beliefs are common to the Austronesian peoples. These indigenous traditions, such as Sundanese , Javanese Kejawèn and Dayak's , have profoundly influenced modern religious practices, resulting in a less orthodox and syncretic form of faith like Javanese , Balinese Hinduism and Dayak Christianity.Magnis-Suseno, F. 1981, Javanese Ethics and World-View: The Javanese Idea of the Good Life, PT Gramedia Pustaka Utama, Jakarta, 1997, pp. 15–18 ,

Hinduism reached the archipelago in the 1st century CE,, The Indian Religions in Pre-Islamic Indonesia and their survival in Bali, in followed by Buddhism in the 6th century. Both religions shaped Indonesia's religious history through influential empires like Majapahit, Srivijaya, and Sailendra, leaving a lasting cultural impact that remains today despite both no longer being the majority. Islam arrived as early as the 8th centuryGerhard Bowering et al. (2012), The Princeton Encyclopedia of Islamic Political Thought, Princeton University Press, , pp. xvi through Sunni and Sufi traders from the Indian subcontinent and , mixing with local cultural and religious traditions to form a distinct Islamic culture ( ). By the 16th century, Islam had become the dominant religion in Java and Sumatra, resulting from the blend of trade, dawah, such as by the and Chinese explorer , and military campaigns by several sultanates.Taufiq Tanasaldy, Regime Change and Ethnic Politics in Indonesia, Brill Academic, Gerhard Bowering et al., The Princeton Encyclopedia of Islamic Political Thought, Princeton University Press,

Catholicism and Protestantism were later introduced through missionary efforts during European colonisation, such as by , though the spread of the former faced challenges under the VOC and Dutch colonial era policies. The latter's primary branches include and ,

(2025). 9789812302977, Institute of Southeast Asian Studies.
though a multitude of other denominations exist in the country. A small Jewish presence has existed in the archipelago, primarily descendants of Dutch and Iraqi Jews, though their numbers have dwindled since independence in 1945. Only a few Jews remain today, mostly in major cities like Jakarta, and Surabaya. One of the remaining synagogues, Sha'ar Hashamayim, is located in Tondano, North Sulawesi, around 31 km from Manado.

Religion is central to the lives of the overwhelming majority of Indonesians, reflecting its integral role in the country's society, culture, and identity. Interfaith relations are significantly shaped by political leadership and civil society, guided by the first principle of Pancasila, which emphasises belief in a supreme deity and religious tolerance. While it promotes harmony, religious intolerance continues to be a recurring issue.


Education
Indonesia has one of the largest education systems in the world, with over 50 million students, 4 million teachers, and more than 250,000 schools spanning the archipelago. Overseen by the Ministry of Primary and Secondary Education, the Ministry of Higher Education, Science, and Technology and the Ministry of Religious Affairs for Islamic schools, the system follows a 6-3-3-4 structure: six years of elementary school, three years each of junior and senior secondary school, and four years of tertiary education. While the literacy rate is high (96%), it is lower in rural and remote areas. Enrolment rates vary across educational levels, with near-universal enrolment in primary education (97.9%), but drop to 81.7% and 64.2% in lower and upper secondary education and around 42.6% for tertiary education.

Government spending on education accounted for approximately 1.3% of GDP in 2023. In 2022, there were 4,481 higher education institutions in the country, including universities, Islamic institutions, and open universities.

(2024). 9789819707751, Springer.
The University of Indonesia, Gadjah Mada University, and the Bandung Institute of Technology are the top three universities in the country, all of which rank within the world's top 300 universities.

Issues regarding quality and equity are persistent, particularly urban-rural disparities, inadequate school infrastructure, and a lack of qualified teachers. The system also lags behind international benchmarks, such as the Programme for International Student Assessment (PISA), where Indonesian students consistently rank near the bottom in reading, mathematics, and science. The higher education sector has been struggling with underfunding, low quality, limited research output and a mismatch between graduates' skills and labour market needs.


Healthcare
Indonesia has made significant progress in developing its healthcare system since 1945. Initially, healthcare services were limited, with a shortage of doctors, hospitals, and infrastructure. In the late 1960s, the government began establishing ( puskesmas) to provide basic services in rural areas.
(2017). 9789290225164, Asia Pacific Observatory on Health Systems and Policies.
With the help of the World Health Organization in the 1970s and 1980s, Indonesia implemented an immunisation program to combat diseases like polio and measles. The system experienced a major transformation in 2014 with the launch of Jaminan Kesehatan Nasional (JKN), a universal health care managed by the ( BPJS Kesehatan). It is one of the world's largest single-payer systems, covering over 83% of the population (225.9 million) in 2021.

Government spending on healthcare accounted for 2.69% of GDP in 2022. Primary healthcare is delivered through puskesmas, hospitals, and private clinics. While the healthcare system lags behind those in ASEAN neighbours like Malaysia and Singapore, significant public health outcomes have been achieved, such as an increase in life expectancy (from 54.9 years in 1973 to 71.1 years in 2023), a decline in child mortality (from 15.5 deaths per 100 live births in 1972 to 2.1 deaths in 2022), polio eradication in 2014, and decreasing cases of malaria.

Some chronic health issues persist, including that affects 21.6% of children under five according to a 2022 data. Low air quality, particularly in major cities, contributes to respiratory illnesses, while maternal and child health indicators remain areas of concern, with a rate the third highest in the region. Additionally, Indonesia has one of the highest smoking rates globally (34.8% of adults), contributing to a high prevalence of non-communicable diseases like cardiovascular issues and lung cancer.


Culture
The cultural history of Indonesia spans over two thousand years and has been influenced by the Indian subcontinent, China, the Middle East, Europe, Melanesian, and Austronesian peoples. These influences have shaped the country's multicultural, multilingual, and multi-ethnic identity, distinct from its indigenous roots. Indonesia holds 16 items recognised by UNESCO as Intangible Cultural Heritage, including puppet theatre, , , the , and . Recent joint nominations added , , and to the list.


Art and architecture
Indonesian arts encompass traditional and contemporary forms shaped by influences from India, the Arab world, China, and Europe, driven by cultural exchange and trade. Bali's , such as classical and -style painting, are renowned, originating from visual narratives depicted on candi bas-reliefs from eastern Java. Traditional architecture reflects ethnic diversity, with iconic and traditional houses ( ) like Toraja's , Minangkabau's , Java's , and each showcasing unique customs and histories.
(2025). 9789971692926, National University of Singapore Press. .

Discoveries of led to the flourishing of tribal art among the Nias, Batak, Asmat, Dayak, and Toraja communities, Violence and Serenity: Late Buddhist Sculpture from Indonesia p. 113 Archaeology: Indonesian Perspective: R.P. Soejono's Festschrift pp. 298–299 who utilised wood and stone as primary sculpting materials. From the 8th to the 15th centuries, the Javanese civilisation excelled in sophisticated stone sculpting and architecture, heavily influenced by the Hindu-Buddhist Dharmic culture. This period produced monumental works like the and temples.


Music, dance and clothing
Indonesia's musical heritage predates historical records, with indigenous tribes using chants and traditional instruments like the , , and in rituals. Influences from other cultures have enriched Indonesian music, such as the gambus and from the Middle East, from Portugal,
(2022). 9789462395831, Atlantis Press SARL.
and (one of the country's most popular music genres), which incorporates Hindi, Malay, and Middle Eastern elements. Today, Indonesian music enjoys regional popularity in Malaysia, Singapore, and Brunei due to cultural similarities and language intelligibility.
(2013). 9781136755095, Routledge. .

With over 3,000 traditional dances, Indonesian dance forms have their origins in rituals and religious worship, such as the dance of witch doctors and , as well as periods of Hindu-Buddhist and Islamic influence. While modern and urban dances shaped by Western, Japanese, and South Korean cultures are gaining popularity, traditional dances like those of Java, Bali, and Dayak remain a living tradition.

Indonesia's rich cultural history is also reflected in its diverse clothing styles. National costumes like and are widely recognised, with roots in Javanese, Sundanese, and Balinese cultures.Jill Forshee, Culture and customs of Indonesia, Greenwood Publishing Group: 2006: . 237 pp. Traditional attire varies by region and province, such as the Batak , Malay and Minangkabau , and Sasak , and is commonly worn for ceremonies, weddings, and formal events.


Theatre and cinema
Traditional Indonesian theatre, such as wayang shadow puppetry, often depicts Hindu epics like the Ramayana and Mahabharata Other forms of drama, such as , , , , and Balinese dance dramas, often incorporate humour, music, and audience interaction. Unique traditions like the Minangkabau combine music, dance, and martial arts ( ), telling semi-historical legends during traditional ceremonies and festivals. Modern theatre, exemplified by Teater Koma, addresses social and political themes through satire.

The first film produced in the archipelago was Loetoeng Kasaroeng (1926), a silent film by Dutch director L. Heuveldorp, and the film industry expanded post-independence with 's pioneering work in the 1950s. During the latter part of the Sukarno era in the 1960s, films were used to promote nationalism and anti-Western sentiment, while Suharto's New Order imposed censorship to maintain social order.

(2025). 9781845202378, Berg. .
Film productions peaked in the 1980s with notable titles such as Pengabdi Setan (1980), Tjoet Nja' Dhien (1988) and comedy films, but the industry declined in the next decade.

In the post-Suharto era, the industry saw a resurgence. Independent filmmakers tackled previously censored themes like race, religion, and love, producing notable films such as Kuldesak (1999) and Ada Apa dengan Cinta? (2002). The 2025 animated film Jumbo set box office records, becoming the most-watched Indonesian film with more than 10 million tickets sold. The Indonesian Film Festival ( Festival Film Indonesia), which gives out the , has celebrated cinematic achievements since 1955.

File:Wayang Wong Bharata Pandawa.jpg|The and in an act of the Wayang Wong performance|alt= File:Loetoeng Kasaroeng p67.jpg|Advertisement for Loetoeng Kasaroeng (1926), the first fiction film produced in the Dutch East Indies


Mass media and literature
Media freedom in Indonesia significantly improved after the fall of Suharto's rule, during which the Ministry of Information tightly controlled the media.
(2025). 9780742517615, Singapore: Institute of Southeast Asian Studies.
The television landscape shifted from a monopoly by the public broadcaster (1962–1989) to a competitive market with national and provincial networks. By the 21st century, television signals have reached every village, offering up to 11 channels. Private radio stations provide news, while foreign broadcasters offer diverse programming. Print publications also expanded significantly after 1998. Indonesia's internet development began in the early 1990s, with the first commercial Internet service provider, PT. Indo Internet, starting operations in 1994. Internet penetration has grown rapidly since 2000. By 2023, the country had 210 million internet users, with mobile phones as the primary point of access.

Indonesian literature has roots in inscriptions from the 5th century and a strong , while early modern literature originates in the Sumatran tradition.

(1981). 9789971690366, Singapore University Press.
Traditional forms such as , , , and dominate early prose and poetry, with notable works such as Syair Abdul Muluk, Hikayat Hang Tuah, Sulalatus Salatin, and Babad Tanah Jawi. The establishment of in 1917 marked a push to develop indigenous literature, leading to a literary Golden Age in the 1950s and 1960s. Influenced by the country's political and social landscape dynamics, modern literature includes works from notable figures like , Pramoedya Ananta Toer, and .


Cuisine
Indonesian cuisine has many regional cuisines, often based upon indigenous culture and foreign influences such as Chinese, African, European, Middle Eastern, and Indian precedents.
(2025). 9781740590099, .
Rice is the leading and is served with of meat and vegetables. Spices (notably chilli), , fish, and chicken are fundamental ingredients.Compared to the infused flavors of and , flavors in Indonesia are kept relatively separate, simple and substantial.
(2025). 9781740660136, Hardie Grant Books.

Some popular dishes, such as , , , , , and soto, are ubiquitous and considered national dishes. The Ministry of Tourism, however, chose as the official national dish in 2014, describing it as binding the diversity of various culinary traditions. Other popular dishes include , one of the many , along with and . Another fermented food is , which is similar in some ways to but uses a variety of bases (not only soy), created by different fungi, and is prevalent in .


Sports
, a form of martial arts]]Association football is the most popular sport in Indonesia in terms of nationwide engagement and interest, while is the country's most successful sport. Indonesia is among the few countries that have won the and , the world team championship of men's and women's badminton. Along with weightlifting, badminton is the sport that contributes the most to Indonesia's Olympic medal tally. The Super League is the country's premier football league. On the international stage, Indonesia was the first Asian team to participate in the FIFA World Cup in 1938 as the Dutch East Indies. On a regional level, Indonesia won a bronze medal at the 1958 Asian Games as well as three gold medals at the 1987, 1991, and 2023 Southeast Asian Games (SEA Games). Indonesia's first appearance at the AFC Asian Cup was in 1996.

Other popular sports include and basketball, which were part of the first National Games ( Pekan Olahraga Nasional, PON) in 1948. and (bull racing) in are some examples of Indonesia's traditional sports. In areas with a history of tribal warfare, mock fighting contests are held, such as caci in and in . is an Indonesian martial art that, in 2018, became one of the sporting events in the Asian Games, with Indonesia appearing as one of the leading competitors. In Southeast Asia, Indonesia topped the SEA Games medal table ten times since 1977, most recently in 2011.


See also
  • List of Indonesia-related topics
  • Index of Indonesia-related articles
  • Outline of Indonesia


Notes

Citations

Bibliography


External links


Government


History
  • "History" – Indonesian history at Repositori Institusi


Tourism


Maps
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