Jones married actor Robert Walker (1918–1951) in 1939. They had two sons, actor Robert Walker, Jr. (1940–2019) and Michael Walker (1941–2007). The couple divorced in 1945. She was married to movie producer David O. Selznick (1902–1965) from 1949 until his death. The couple had a daughter, Mary Jennifer Selznick (1954–1976). Jones was married to businessman Norton Simon (1907–1993) from 1971 until his death.