Denis Mulcahy (born 15 August 1956) is an Irish retired hurler who played as a right corner-back for the Cork senior team.Born in Midleton, County Cork, Mulcahy first played competitive hurling during his schooling at Midleton CBS. He arrived on the inter-county scene at the age of twenty when he first linked up with the Cork under-21 team. He made his senior debut during the 1980-81 league. Mulcahy subsequently became a regular member of the starting fifteen and won two All-Ireland medals, four Munster medals and one National Hurling League medal. He was an All-Ireland runner-up on one occasion. As a member of the Munster inter-provincial team on a number of occasions, Mulcahy won one Railway Cup medal as a non-playing substitute. At club level he is a one-time All-Ireland medallist with Midleton. In addition to this he has also won two Munster medals and four championship medals. Throughout his career Mulcahy made 24 championship appearances. His retirement came following the conclusion of the 1992 championship.