Cognomen สุทธิเชษฐ (สุทธิเชษฐ 
, Sutthichet ) , in all the world, is an extremely rare surname. The cognomen สุทธิเชษฐ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, สุทธิเชษฐ is the forename as well as the last name.