Cognomen วลัยกาญจน์ (Valaikarn 
, วลัยกาญจน์, Waluikarn ) , around the world, is an extremely rare last name. The last name วลัยกาญจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, วลัยกาญจน์ is the forename as well as the last name.