Yun may refer to:
- Yǔn, tribal polity from Turan
- Yun (狁). Chinese name a Xionites (later, Huns), nomadic tribe of Central Asia
- Yun (Burmese name), a Burmese family name or first name
- Yun (Chinese name), a Chinese family name
- Yun (Korean name), common of a Korean family name Yoon (尹)
- Yun, common of Korean surname Yeon (燕:延)
- Yun, common of Korean surname Lyun (連)
- Yun (Street Fighter), a Street Fighter character
- Yun (Elfquest), an Elfquest character
- Yun, the name of a Dark Jedi in the Star Wars Expanded Universe
- Yun County, Hubei, in China
- Yun County, Yunnan, in China
- Yunnan, abbreviated as Yún, province of China
- Brother Yun, a Chinese Christian