Leek is a surname. Notable people with the surname include:
Andy Leek (born 1964), English musicianGene Leek (born 1936), American former baseball playerGeoff Leek (1932–2008), Australian rules footballerJohn de Leche or de Leek, Archbishop of Dublin (1311-1311)Ken Leek (1935–2007), Welsh footballerMiranda Leek (born 1993), American archerPeter Leek (born 1988), Australian Paralympic swimmerRalph Leek, American football playerStephen Leek (born 1959), Australian composer, conductor, educator and publisherSybil Leek (1917–1982), English witch, astrologer and psychic