1900s
- Lon Chaney Jr. (1906–1973)
- Joan Crawford (1903–1977) maternal grandmother was Irish
- Bing Crosby (1903–1977) mother was of Irish descent.
- James Dunn (1905–1967)
- Errol Flynn (1909–1959)
- Eddie Foy Jr. (1905–1983)
- Helen Hayes (1900–1993)
- John Huston (1906–1987)
- Helen Kane (1904–1966) mother, Ellen, was a direct Irish immigrant (Census records, 1910, 1920, 1930)
- Barbara Stanwyck
- Spencer Tracy (1900–1967)
- John Wayne (1907–1979)
Read more about this topic: List Of American Actors Of Irish Descent