Philip O'Reilly may refer to: Philip O'Reilly (Cavan County MP) (1599–1655), member of parliament for County Cavan, and leading member of the 1641 Rebellion Philip Og O'Reilly (c. 1640–1703), member of parliament for Cavan Borough Philip Leo O'Reilly, Irish bishop Philip O'Reilly (rugby union) Japanese rugby union player See also Philip Reilly, American fencer