Peter O'Sullivan may refer to:
- Peter O'Sullivan (Australian footballer) (1932–1972), Australian rules footballer
- Peter O'Sullivan (hurler) (born 1943), 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)
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