Thanos is a Marvel Comics supervillain.

Thanos may also refer to:

Thanos (Marvel Cinematic Universe), the Marvel Cinematic Universe version of the character Thanos (Squid Game), a character in the second season of Squid Game Thanos (name), a list of people with the given name and surname Thanos simonattoi, a Brazilian carnivorous dinosaur active during the Cretaceous Period

See also Thanatos, Greek personification of death