Chu may refer to:

Places:

• Chu river in modern Kyrgyzstan
• Chu, Kazakhstan, a city in Kazakhstan
• 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, 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.
• Chu Kit Kwa, an accountant living in Singapore
• In Japan, the noise a mouse makes.

CHU may refer to:

• CHU (callsign), the callsign of a shortwave radio station in Ottawa, Canada
• 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.

Chu | 초나라 | 楚 | 楚