Errol O'Neill was born on March 8, 1945 in Brisbane, Queensland, Australia as Errol Joseph O'Neill. He is an actor, known for My Entire Life (1996), Rome: Total War (2004) and Surrender in Paradise (1976).
| Movie | Fatal Honeymoon | Unknown | 2012 |
| Series | The Strange Calls | Unknown | 2012 |
| Movie | A Heartbeat Away | Derek | 2011-03-17 |
| Series | East of Everything | Unknown | 2008 |
| Movie | Crooked Business | Unknown | 2008 |
| Movie | Rome: Total War - Barbarian Invasion | Unknown | 2005 |
| Movie | Rome: Total War | None | 2004-09-22 |
| Series | Fat Cow Motel | Unknown | 2003 |
| Series | All Saints | Unknown | 1998-02-24 |
| Movie | My Entire Life | Mr. Wilson | 1997-01-30 |
| Movie | Joey | Unknown | 1997 |
| Movie | Redheads | Unknown | 1994 |
| Movie | The Delinquents | Unknown | 1989 |
| Series | Mission: Impossible | Unknown | 1988-10-23 |
| Movie | Frenchman's Farm | Unknown | 1987 |
| Movie | Bootleg | Unknown | 1985 |
| Movie | Surrender in Paradise | Unknown | 1976 |