Tom Thumb (stylised as tom thumb) is a 1958 British musical fantasy film produced and directed by George Pal, and released by MGM. The film, based on the fairy tale "Thumbling" by the Brothers Grimm, is about a tiny youth who manages to outwit two thieves determined to make a fortune from him.

Starring Russ Tamblyn in the title role, the film features a largely British supporting cast (it was filmed in both Hollywood and London), including Bernard Miles and Jessie Matthews as Tom's adoptive parents, June Thorburn as the Forest Queen, and comic actors Terry-Thomas and Peter Sellers as the villainous duo who try to exploit the tiny hero for profit.

Pal worked with cinematographer Georges Périnal, animators Wah Chang and Gene Warren, art director Elliot Scott and special effects artist Tom Howard to create the animated and fantasy sequences. Douglas Gamley and Ken Jones wrote the music, with lyrics by Peggy Lee.

The film is referenced in The Wonderful World of the Brothers Grimm (1962) and Pinkeltje (1978). The film is also featured in That's Dancing! (1985)