Michael O'Sullivan

Michael O'Sullivan may refer to:

Individual

 * Michael O'Sullivan (actor) (1934–1971), American actor
 * Michael O'Sullivan (cricketer) (born 1973), former English cricketer
 * Michael O'Sullivan (footballer) (born 1962), former Australian rules footballer
 * Michael O'Sullivan (hurler) (born 1990), Irish hurler who played for Cork
 * Michael O'Sullivan (poet) (born 1959), Irish poet
 * Michael O'Sullivan (politician) (1784–1839), Lower Canada lawyer, militia officer, politician and judge
 * Michael O'Sullivan (soccer) (born 1995), English-American soccer player
 * Sir Michael Neil O'Sullivan (1900–1968), Australian politician and lawyer
 * Mickey O'Sullivan (born 1952), Irish retired Gaelic football manager, selector, and former player

Fictional

 * Michael O'Sullivan, character in Road to Perdition