- Ku Klux Klan
- Ku Kluxer
- ku-chiku
- Kuala Lumpur
- Kuan Yin
- Kuangchou
- Kubla Khan
- Kublai Kaan
- Kublai Khan
- Kubrick
- Kuchean
- Kuchean dialect
- kudos
- kudu
- kudu lily
- kudzu
- kudzu vine
- Kuenlun
- Kuenlun Mountains
- Kuhn
- Kui
- Kuiper
- Kuiper belt
- Kuiper belt object
- Kukenaam
- Kukenaam Falls
- Kuki
- Kuki-Chin
- Kulanapan
- Kulun
- Kumasi
- kumis
- kummel
- kumquat
- kumquat tree
- Kund Johan Victor Rasmussen
- Kundts tube
- kung fu
- Kung Futzu
- Kunlan Shan
- Kunlun
- Kunlun Mountains
- kunzite
- Kuomintang
- Kupffers cell
- Kura
- Kura River
- kurakkan
- kurchee
- kurchi
- Kurd
- Kurdish
- Kurdistan
- Kurdistan Labor Pary
- Kurdistan Workers Party
- kuri-chiku
- Kurosawa
- Kuroshio
- Kuroshio current
- kurrajong
- kurrat
- Kursk
- Kurt Godel
- Kurt Vonnegut
- Kurt Waldheim
- Kurt Weill
- kurta
- kuru
- kurus
- Kurux
- Kusan
- Kussmauls coma
- kutch
- Kutuzov
- kuvasz
- Kuvi
- Kuwait
- Kuwait City
- Kuwaiti
- Kuwaiti dinar
- Kuwaiti dirham
- Kuwaiti monetary unit
- Kuznets