Valin is a surname. Notable people with the surname include:
Jonathan Valin (born 1947), American writer Jorge Valín (born 2000), Spanish footballer Martial Valin (1898–1980), French aviator Pierre-Vincent Valin (1827–1897), Canadian businessman and politician Valin v Langlois, Canadian constitutional law decision Stephanie Valin (born 1987), Canadian water polo player
See also Robert Van Valin Jr. (born 1952), American linguist Vatin (surname)