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