Chris O'Leary is a Sinn Féin Cork City Councillor and former Lord Mayor of Cork. With a background in community development projects, and a councillor since 2002, O'Leary left the Green Party in 2009, and was an independent councillor prior to joining Sinn Féin in 2010. He became Lord Mayor of Cork in June 2015, in the second year of a D'Hondt method rotation agreed for the office in 2014. He was Lord Mayor of Cork from June 2015 to June 2016, when he was replaced by Fine Gael TD Des Cahill.