Cognomen Kollayut (Kollayut 
) , all over the world, is an extremely rare surname. Much more prevalently, Kollayut is the forename as well as the last name.
Nualtong, Maneewan, Singhakul, Chaisuwan, Panpiemrasda, Thuasuphap, Thanadolsuwan, Rattanakham, Jongnimitphaiboon, and Thanakitpaisan