Xi may refer to:
Arts and entertainment
- Xi (alternate reality game), a console-based game
- Xi, Japanese name for the video game Devil Dice
Language
- Xi (letter), a Greek letter
- Xi, a Latin digraph used in British English to write the sound /kʃ/
People
- Xi (surname), any of several Chinese surnames
- Xi Jinping, current General Secretary of the Chinese Communist Party
Places
- Xi (state), an ancient Chinese state during the Shang and Zhou Dynasties
- Xi County, Henan, China
- Xi County, Shanxi, China
- Xi River, western tributary of the Pearl River in southern China
Other uses
- Xi (business), a Chinese form of business organization
- Xi baryon, a range of baryons with one up or down quark and two heavier quarks
- Xi, a brand name for the 4G LTE mobile telecommunications service operated by NTT DoCoMo in Japan
- Xi (apartment), a brand name for some apartments constructed by GS Construction in Korea.
See also
- XI (disambiguation)
- 11 (disambiguation)
- Kumo Xi, an ancient Mongolic people
- Shuang Xi (双喜, written 囍), a Chinese calligraphic design
- Hsi (disambiguation) — "Xi" and "Hsi" are different transliterations of the same sound in Chinese