4-letter words starting with ka
- katy — a female given name, form of Katherine or Catherine.
- katz — Sir Bernard [bur-nerd] /ˈbɜr nərd/ (Show IPA), 1911–2003, British biophysicist, born in Germany: Nobel Prize in Medicine 1970.
- kaur — a title assumed by a Sikh woman when she becomes a full member of the community
- kava — a Polynesian shrub, Piper methysticum, of the pepper family, the aromatic roots of which are used to make an intoxicating beverage.
- kawa — Alternative form of kava.
- kaya — Torreya nucifera, the vern Japanese nutmeg tree.
- kaye — Danny (David Daniel Kaminski) 1913–87, U.S. comedian, singer, and actor.
- kayo — a knockout in boxing.
- kays — Plural form of kay, the name of the letter K.