Cai

Cai or CAI may refer to:

• Cai (state), a state in ancient China
• Caí River, Rio Grande do Sul, Brazil
• Cái River, Vietnam
• Cairo International Airport (IATA airport code), Egypt
• Caithness (Chapman code), a historic county in Scotland

• Canadian Airlines International, a defunct Canadian airline
• Capitol Archaeological Institute, an archaeological institute, part of The George Washington University, US
• Central Asia Institute, a non-profit organization that promotes education in Central Asia
• Chartered Accountants Ireland, Ireland's largest accountancy body
• Christian Assemblies International, an Australian-based charity organisation and religious group
• Club Alpino Italiano, the Italian alpine club
• Coleraine Academical Institution, a school in Northern Ireland
• College of Anaesthesiologists of Ireland, a medical training body in Ireland
• Community Associations Institute, an influential trade association and special interest group
• Compagnia Aerea Italiana, parent company of Alitalia, Italy
• Confederation of Australian Industry, forerunner of the Australian Chamber of Commerce and Industry
• Content Authenticity Initiative, an association for provenance metadata
• Corendon Airlines (ICAO airline code), a Turkish airline
• Corpo Aereo Italiano, an element of the Italian Regia Aeronautica during the Battle of Britain
• WCAI, a group of NPR radio stations in Massachusetts, US

• Calcium–aluminium-rich inclusion, a type of mineral
• Carbonic anhydrase inhibitor, in pharmacology
• Codon Adaptation Index, a measure of codon bias in protein-coding DNA sequences
• Cold air intake, of an automobile
• Computer-aided inspection
• Computer assisted instruction or e-Learning
• Computer-assisted language learning
• Conodont Alteration Index, an estimate of the maximum temperature reached by a sedimentary rock
• Controlled Auto-Ignition, a technology of internal combustion for reciprocating engines

• Club Atletico Independiente de La Chorrera, a Panamanian football (soccer) team
• Comisión de Actividades Infantiles, an Argentine football (soccer) team
• Club Atlético Independiente, an Argentine football (soccer) team

• Cai (name), Welsh and alternative spelling of the name Kai
• Cai (surname), a common Chinese surname
• Comprehensive Agreement on Investment, a proposed deal between China and the European Union
• Mesoamerican languages (ISO 639-2 and ISO 639-5 codes)
• Sir Kay (Welsh: Cai), a character in Arthurian legend

• Kai (disambiguation)
• CAIS (disambiguation)