Cognomen แสนชัย (แสนชัย 
, Saenchai 
, Sanongchai ) , in all the world, is a rare family name. The cognomen แสนชัย is characteristic of Thailand, where it is quite a rare surname, Denmark, where it is a rare surname, and Germany, where it is an extremely rare surname. Likewise, แสนชัย is the forename as well as the last name.