1940s
- Armand Assante (1949– ) film actor, mother was of Irish ancestry
- Bud Cort (1946– )
- Patty Duke (1946– ) American actress and mother of Sean and Mackenzie Astin.
- Mia Farrow (1945– )
- Harrison Ford (1942– ) paternal grandfather was Irish-American
- Teri Garr (1944– )
- Dennis Holahan (1942– ) actor
- Diane Keaton (1946– )
- Kevin Kline (1947– )
- Michael Moriarty (1941– )
- Ryan O'Neal (1941– )
- Martin Sheen (1940– ) His mother was an immigrant from Ireland
- Suzanne Somers (1946– )
- Robert De Niro (1943– ) paternal grandmother was Helen O'Reilly, an Irish immigrant.
- Liza Minnelli (1946– ) Irish from her mother's (Judy Garland) side.
- Susan Sarandon (1946– ) Sarandon's father was of English, Irish, and Welsh ancestry.
Read more about this topic: List Of American Actors Of Irish Descent