Thermos (disambiguation)

Thermos most commonly refers to:
 * Thermos L.L.C., a brand of domestic vacuum flasks
 * A vacuum flask, also commonly referred to as a "thermos"

Thermos may refer to:
 * Thermos (Aetolia), an ancient Greek city, the capital city of the Aetolian League
 * A thermos bomb, the AR-4 anti-personnel bomb used during World War II
 * A No. 73 grenade, an anti-tank hand grenade of World War II
 * Thermos, a 1990 album by Bailter Space