Denis O'Riordan (born 1941) is an Irish former hurler who played as a centre-back and full back at senior level for the Cork county team.
O'Riordan first arrived on the inter-county scene at the young age of seventeen when he first linked up with the Cork minor team.
O'Riordan immediately became a regular member of the starting fifteen and won one Munster medal in 1966 in Limerick.
This cork team went on to win the 1966 All Ireland senior hurling championship on the second Sunday of September.
As a member of the Munster inter-provincial team on a number of occasions, O'Riordan won three Railway Cup medal.