Peter O'Reilly

Peter O'Reilly may refer to:


 * Peter O'Reilly (civil servant) (1827–1905), settler and official in the Colony of British Columbia
 * Peter Joseph O'Reilly (1850–1923), Irish-born Catholic bishop in the United States
 * Peter O'Reilly (hurler) (1902–1940), Irish hurler
 * Peter O'Reilly (Gaelic footballer) (1916–1994), Irish Gaelic football manager, coach and player
 * Peter O'Reilly (cricketer) (born 1964), Irish sports journalist and former cricketer