Con O'Callaghan may refer to Con O'Callaghan (hurler), Irish hurler Con O'Callaghan (decathlete) (1908–?), Irish Olympic decathlete Con O'Callaghan (Gaelic footballer) Gaelic football player
See also Cornelius O'Callaghan (disambiguation) Conor O'Callaghan, Irish poet Conor O'Callaghan (hurler), Irish hurler