Liam O'Connor (13 September 1955 – 2 December 2013) was an Irish Gaelic footballer who played as a full-back for the Offaly senior team.^[1][2]

Born in Walsh Island, County Offaly, O'Connor first arrived on the inter-county scene at the age of twenty-three when he first linked up with the Offaly senior team when he made his debut in the 1979 championship. O'Connor went on to play a key part for the Offaly defence over the next few years, and won one All-Ireland medal and three Leinster medals. He was an All-Ireland runner-up on one occasion.^{[citation needed]}

O'Connor was a member of the Leinster inter-provincial team on a number of occasions throughout his career, however, he never won a Railway Cup medal. At club level he was a two-time Leinster medallist with Walsh Island. He also won six successive championship medals with the club.^{[citation needed]}

Throughout his career O'Connor made 20 championship appearances. His retirement came following Offaly's defeat by Louth in the 1986 championship.^{[citation needed]}