David O'Connor

• David O'Connor (Egyptologist), Australian Egyptologist
• David O'Connor (equestrian), American international eventer
• David O'Connor (footballer), Drogheda United player
• David J. O'Connor, member of the Massachusetts House of Representatives
• David O'Connor (illustrator), an illustrator of The Fey Series
• David O'Connor (rugby union), Irish rugby union player
• David O'Connor (singer), Irish winner of series five of You're a Star in 2006-07