Tommy Tiernan is an Irish Comedian, Actor and Writer. He was educated in St. Patrick's Classical School in Navan, a former Roman Catholic junior seminary which remarkably produced two winners of the prestigious Perrier Comedy Award in the 1990s. He also attended St. Joseph's College, Garbally Park, Ballinasloe , Co Galway.

Tiernan has been a regular performer at national and international comedy festivals including the Edinburgh Festival, Just for Laughs Montreal Comedy Festival, New York Comedy Festival and the Kilkenny Comedy Festival. He also acted in the acclaimed Father Ted series on Channel 4 playing a depressed priest.

Tiernan won the 1996 the Channel 4 "So You Think you're Funny" award and he also won the 1998 Perrier Comedy Award at the Edinburgh Festival.