Mary Olive Byrne (), known professionally as Olive Richard (February 19, 1904 – May 19, 1985), was the domestic partner of William Moulton Marston and Elizabeth Holloway Marston.
She has been credited as an inspiration for the comic book character Wonder Woman.
Byrne was the daughter of Ethel Byrne, the Progressive Era activist who opened the first birth-control clinic in the United States with her sister Margaret Sanger.