Peter O'Malley (disambiguation)

Peter O'Malley may refer to:


 * Peter O'Malley (born 1937) is an American baseball executive.
 * Peter O'Malley (cricketer) (1927-1957), New Zealand cricketer
 * Peter O'Malley (footballer), New Zealand international football (soccer) player
 * Peter O'Malley (golfer) (born 1965), Australian golfer