John Egan (Irish: Seán Mac Aogáin) (born 20 October 1992) is an Irish professional footballer who plays as a defender for Sheffield United and the Irish national team.
He has had loan spells with Crystal Palace, Sheffield United, Bradford City and Southend United, and has represented Ireland at under-17, under-19 and under-21 level.
He was released by Sunderland at the end of the 2013–14 season, and joined Gillingham in July 2014.