Ki (기), also romanized as Gi or Kee, is a Korean family name. According to the 2000 census, there were 26,679 people with this surname in South Korea.
- Empress Gi (1315–1370(?))
- Gi Dae-seung (1527–1572), Confucian scholar[1]
- Gi Ja-heon (1562–1624), politician, Yeonguijeong (Prime Minister) of Joseon
- Ki Tae-young (b. 1978), actor (Creating Destiny, Living in Style and Make Your Wish)
- Ki Bo-bae (b. 1988), archer, gold medalist at the 2012 and 2016 Summer Olympics[2]
- Ki Sung-yueng (b. 1989), football player for Newcastle United, former international for South Korea[3]
- LilyPichu (Lily Ki) (b. 1991), American internet personality, musician, and voice actress, member of OfflineTV
- Ki Do-hoon (b. 1995), actor and model (Arthdal Chronicles and Once Again)
- Ki Hui-hyeon (b. 1995), singer and member of K-pop band DIA[4]