Niall Ó Muineacháin (born 10 July 1989) is an Irish hurler who plays as a left corner-back for the Kildare senior team.
He made his senior debut in the 2008 Christy Ring Cup.
Ó Muineacháin has gone on to play a key role for Kildare since then, and has won one Christy Ring Cup medal and one National League (Division 3A) medal.
At club level Ó Muineacháin is a four-time championship medallist with Celbridge.
He scored an own goal against London in the opening minute of the 2022 Christy Ring Cup contest.