Martha Hyer (August 10, 1924 – May 31, 2014) was an American actress. She is best remembered for her role as Gwen French in Some Came Running (1958), for which she was nominated for the Academy Award for Best Supporting Actress. Her autobiography, Finding My Way: A Hollywood Memoir, was published in 1990.
Hyer was born in Fort Worth, Texas into a wealthy family, the daughter of Julien Capers Hyer (1894–1974), an attorney and judge, and Agnes Rebecca (née Barnhart; 1892–1969). She was the middle of three sisters, with Agnes Ann (1920–2014) and Jeanne (b. 1928). The Hyers were active in the Methodist church where her father was a highly respected Sunday school teacher. Hyer graduated from Arlington Heights High School and then from Northwestern University with a degree in drama. She was in the sorority Pi Beta Phi with actress Patricia Neal. She then moved to California to study at the Pasadena Playhouse, and soon after was signed to a film contract with RKO. She was married twice, first to producer C. Ray Stahl and later to producer Hal B. Wallis. She converted to Judaism, Wallis's religion, after their marriage. Wallis and Hyer remained together until his death in 1986. At Northwestern University there is The Hal and Martha Hyer Wallis Blackbox. She had no children.