Martha Hyer (August 10, 1924, Fort Worth, Texas - May 31, 2014, Santa Fe, New Mexico) was an American actress.

She attended Northwestern University and was a member of Pi Beta Phi fraternity. After completing her education, she next appeared in The Locket in 1946. She had roles in So Big (1953), Sabrina (1954), The Delicate Delinquent in 1956 (Jerry Lewis' first film without Dean Martin), Houseboat (1958), Ice Palace (1960), Desire in the Dust (1960), The Carpetbaggers (1964), First Men in the Moon (1964), Blood on the Arrow (1964) and The Sons of Katie Elder (1965), Night of the Grizzly (1966), among many others. She costarred with Keenan Wynn in Bikini Beach (1964), one of the Beach Party movies with Frankie Avalon and Annette Funicello.