The Thing from Another World, sometimes referred to as just The Thing, is a 1951 American black-and-white science fiction-horror film directed by Christian Nyby, produced by Edward Lasker for Howard Hawks' Winchester Pictures Corporation, and released by RKO Radio Pictures. The film stars Margaret Sheridan, Kenneth Tobey, Robert Cornthwaite, and Douglas Spencer. James Arness plays The Thing. The Thing from Another World is based on the 1938 novella "Who Goes There?" by John W. Campbell (writing under the pseudonym of Don A. Stuart).

The film's storyline concerns a United States Air Force crew and scientists who find a crashed flying saucer frozen in the Arctic ice and a humanoid body nearby. Returning to their remote arctic research outpost with the body still in a block of ice, they are forced to defend themselves against the still alive and malevolent plant-based alien when it is accidentally thawed out.