Blubber is a thick layer of vascularized fat found under the skin of all cetaceans, pinnipeds, and sirenians.

Blubber may also refer to: Art, entertainment, and media Blubber (novel), a 1974 children's novel by Judy Blume Blubber Bear, a fictional character in the television series Wacky Races

See also Blibber-Blubber Blubbering