Robert O'Neill

Robert O'Neill or Robert O'Neil may refer to:


 * Robert J. O'Neill (born 1976), US Navy SEAL who claims to have fatally shot Osama bin Laden
 * Robert O'Neill (footballer) (1883–1961), Australian rules footballer
 * Robert O'Neill (historian) (1936–2023), Australian historian and academic
 * Robert E. O'Neill (fl. 2010s), American attorney
 * Robert Torrens O'Neill (1845–1910), Irish politician who served in the UK House of Commons
 * Robert M. O'Neil (1934–2018), American lawyer and president of the University of Virginia
 * Bob O'Neil, American football player
 * Bob O'Neill (1905–1978), Australian rules footballer
 * Robert John O'Neill (bishop), retired Episcopal bishop of Colorado
 * Mr. Robert O'Neil, a Teenage Mutant Ninja Turtles character