Connor O'Brien

Connor O'Brien may refer to:


 * Connor O'Brien, King of Thomond (died 1540)
 * Connor O'Brien, 3rd Earl of Thomond (1534?–1581)
 * Connor O'Brien, 2nd Viscount Clare (1605–1670)
 * Connor O'Brien (alpine skier) (born 1961), Canadian alpine skier
 * Connor O'Brien (footballer) (born 2004), English footballer