Marc Ó Sé (born 25 April 1980) is an Irish sportsman. A teacher by profession, he works in the CBS in Tralee Co. Kerry, he played Gaelic football for the Kerry county team from 2002 until 2016 and played with his local club team An Ghaeltacht until 2018. He has played right across the back line for Kerry. His older brothers, Darragh and Tomás, also represented Kerry.