Daniel O'Connor may refer to:
Politics Daniel O'Connor (politician) (1844–1914), Australian colonial politician and businessman Danny O'Connor (Northern Irish politician) (born 1965), former Social Democratic and Labour Party representative in Northern Ireland Danny O'Connor (Ohio politician) (born 1986), American Democratic congressional nominee
Sport Daniel O'Connor (athlete) (born 1952), American Olympic racewalker Dan O'Connor (baseball) (1868–1942), Canadian Major League Baseball player Dan O'Connor (American football) (1894–1964), professional American football player Danny O'Connor (footballer) (born 1980), Irish footballer Danny O'Connor (boxer) (born 1985), American boxer Danny O'Connor (bowls) (?–2017), New Zealand lawn bowls player
Other uses Dan O'Connor (prospector) (1864–1933), Canadian businessman and prospector Dan O'Connor, lead singer and guitarist of the pop punk band Four Year Strong Dan O'Connor (actor) (born 1978), Australian actor and singer Danny O'Connor (born 1949), American recording artist; see Canary Conn Daniel O'Connor (bishop) Daniel J O'Connor, British philosopher Danny Boy (rapper) (Daniel O'Connor, born 1968), American rapper, art director, and executive director of the Outsiders House Museum
See also Daniel Connor (disambiguation)