Surname ชัยเดช (ชัยเดช 
, Chaiyadet 
, Chaidech ) , worldwide, is quite a rare family name. The cognomen ชัยเดช is habitual in Thailand, where it is quite a rare surname, and Finland, where it is a very rare surname. Likewise, ชัยเดช is the forename as well as the last name.