• A common Chinese surname

Spanish writing Chu (English Chou or Zhou) is the surname 曹 from Guangzhou, Guangdong (Canton). Places:

• Districts in the People's Republic of China and the Republic of China
• Chu River in modern Kyrgyzstan and Kazakhstan
• Chu, Kazakhstan (presently more commonly spelled "Shu"), a city in Kazakhstan
• Chu River in Vietnam
• A popular unofficial name for the Hubei Province and Hunan Province in the People's Republic of China States:
• Chu (Ten Kingdoms), a kingdom during the Period of Five Dynasties and Ten Kingdoms
• State of Chu(楚), a state in the Spring and Autumn Period and Warring States Period of ancient China
• Kingdom of Chu, a state proclaimed by various rebellion leaders after the fall of the Qin Dynasty, including the state proclaimed by Xiang Yu during the Chu Han Contention
• The short-lived regime of Huan Xuan: see Jin Dynasty (265-420) Other:
• Old Church Slavonic (ISO 639 alpha-3, chu)
• Chu (instrument), an ancient Chinese instrument made of wood like a box that is struck by a stick to mark section beginnings
• A variation on the Latin transliteration of the common Chinese surname Zhu.
• Meaning House or Home in Min Nan Chinese and its Taiwanese dialect. This word appear on Toponym widely in Fujian, Taiwan, Singapore. See Chhù(厝).
• Chu, the Japanese onomatopoeia for the sound of a kiss.
• Chu, a merman character from the Japanese animated cartoon series One Piece.
• Chu Jelly, a recurrent enemy in the Legend of Zelda series.

CHU may refer to:

• Chung Hua University, a university in Hsinchu, Republic of China (Taiwan)
• Houston County Airport, in Houston County, Minnesota.
• CHU (callsign), the callsign of a shortwave radio station in Ottawa, Canada
• ChristenUnie, a Dutch political party
• Christelijk-Historische Unie (Christian-Historical Union), an influential Protestant political party in the Netherlands
• Churchill College, Cambridge, used in University of Cambridge internal publications
• , China Unicom's stock symbol on the New York Stock Exchange.
• Containerized housing unit, a shipping container converted to living space.