Thinner (marketed as Stephen King's Thinner) is a 1996 American body horror film directed by Tom Holland and written by Michael McDowell and Holland. The film is based on Stephen King's 1984 novel of the same name (which he wrote under the pseudonym Richard Bachman) and stars Robert John Burke and Joe Mantegna. In the film, an obese lawyer who accidentally kills a Romani woman is cursed by the woman's father to rapidly lose weight.

Thinner was released in the United States on October 25, 1996, by Paramount Pictures. It received mostly negative reviews and grossed $15.3 million against a budget of $8 million.

Producer Mitchell Gallin regarded the script as the best he had ever worked with, but thought the final film did not do it justice.