John Gardiner (born 8 February 1983) is an Irish retired hurler who played for Cork Senior Championship club Na Piarsaigh. He played for the Cork senior hurling team for 11 seasons, during which time he usually lined out as a right wing-back. A commanding and combative defender, Gardiner was part of a dominant half-back line that also included Seán Óg Ó hAilpín and Ronan Curran. Gardiner began his hurling career at club level with Na Piarsaigh. He eventually broke onto the club's senior team and enjoyed his greatest success when Na Piarsaigh won the 2004 Cork Senior Championship.