Liam O'Neill
- Birthday: 1956-05-21
- Deathday: 2020-05-29
- Place of birth: Ireland
Liam O'Neill was born on 21 May 1956 in Ireland. He was a producer and writer, known for The Barber Shop (1993), Frankie and Johnnie (1987) and Lost and Found (2015). He died on 29 May 2020 in Carlow, Ireland.
