Kast or KAST may refer to:

  • Kast (furniture), a tall wardrobe-like Dutch chest with double doors. Often used as hope chests, these were constructed so as to partially dismantle for transport to the matrimonial home.
  • KAST (AM), an AM radio station in Astoria, Oregon
  • KLMY, a radio station (99.7 FM) licensed to Long Beach, Washington, United States, which held the call sign KAST-FM from January 2006 to January 2009
  • The ICAO identifier for Astoria Regional Airport in Astoria, Oregon
  • Kamusi Awali ya Sayansi na Tekinologia, a Swahili dictionary of terms in science and technology
  • José Antonio Kast (born 1966), Chilean lawyer and politician, brother of Miguel Kast
  • Miguel Kast (1948–1983), German-born Chilean economist, brother of José Antonio Kast
  • Kast, a streaming service that acquired Rabb.it, a similar streaming service, in July 2019.
  • Korean Academy of Science and Technology, South Korea's highest academy of science which serves as a national think-tank