Nicholas "Nickey" Brennan (born 3 December 1953) is an Irish former hurler, manager and Gaelic games administrator. He played as a right wing-back at senior level for the Kilkenny county team. More recently, he served as the 35th president of the Gaelic Athletic Association. Brennan joined the team during the 1974 championship and was a regular member of the starting fifteen until his retirement after the 1985 championship. During that time he won two All-Ireland medals, three Leinster medals and two National Hurling League medals.