Mutsu

 ( Japanese-language Surnames ) 

Mutsu may refer to:

• Mutsu, Aomori, a city in Aomori prefecture, Japan
• Mutsu Province, one of the old provinces of Japan
• Mutsu Bay, a bay inside Aomori Prefecture, Japan
• Mutsu, Estonia, a village in Vastseliina Parish, Võru County, Estonia

• Mutsu Munemitsu (1844–1897), diplomat in Japan during the Meiji period
• Mutsu Hirokichi (1869–1942), Japanese diplomat and an educator in Meiji and Taishō period Japan
• Iso Mutsu (1867–1930), author of the first guide to Kamakura ever written
• Mutsu Ryōko (1856–1900) Japanese noblewoman and humanitarian

• , a 1970 merchant ship that was Japan's only nuclear-powered ship
• , a 1920 battleship of the Imperial Japanese Navy
• Bluefish, a sushi/sashimi ingredient
• Mutsu (apple), a yellow-gold apple also known as Crispin
• The fictional Mutsu clan in the manga and anime series Shura no Toki - Age of Chaos
• Mutsu Kokubun-ji Yakushidō, the provincial temple of former Mutsu Province, Japan
• Mutsu Tonohohon, an action video game released in 2002 by Tomy