Peter O'Sullivan
Peter O'Sullivan may refer to:
- Peter O'Sullivan (Australian footballer) (1932–1972), Australian rules footballer
 - Peter O'Sullivan (hurler) (1943–2024), Irish hurler
 - Peter O'Sullivan (Welsh footballer) (born 1951), Welsh international footballer
 
See also
- Peter O'Sullevan (1918–2015), British horse racing commentator
 - Peter Sullivan (disambiguation)