Santa Claus Conquers the Martians is a 1964 American science fiction comedy film. It was directed by Nicholas Webster, produced and written by Paul L. Jacobson, and based on a story by Glenville Mareth. John Call stars as Santa Claus, ten-year-old Pia Zadora as Girmar the Martian girl, and Doris Rich in the first documented motion picture role of Mrs. Claus.

Pia Zadora is an American actress and singer. She debuted a child actress on Broadway, in regional theater, and in the film Santa Claus Conquers the Martians (1964). She came to national attention in 1981 when, following her starring role in the highly criticized Butterfly, she won a Golden Globe Award as New Star of the Year while simultaneously winning the Golden Raspberry Award for Worst Actress and the Worst New Star for the same performance.