Marc MacSharry (born 12 July 1973) is an independent, formerly Fianna Fáil, politician who is a Teachta Dála (TD) for Sligo–Leitrim since 2016. From 2002 to 2016, he was a Fianna Fáil Senator on the Industrial and Commercial Panel. He resigned from Fianna Fáil's parliamentary party in September 2021, alleging double standards. He resigned his Fianna Fáil membership in November 2022, amid claims he had bullied colleagues.