You could be after;
- The Chu river valley in modern Kyrgyzstan.
- Chu (city), a city in Kazakhstan. See List of cities in Kazakhstan)
- Chu (state), a state in the Spring and Autumn and Warring States Periods of ancient China.
- Chu, the state proclaimed by Xiang Yu during Chu Han Contention after the fall of Qin Dynasty
- Chu, the short-lived regime of Huan Xuan. See Jin Dynasty (265-420).
- Chu, a kingdom during the Period of Five Dynasties and Ten Kingdoms.
- CHU, the callsign of a shortwave radio station in Ottawa, Ontario, Canada