Cognomen เศรษฐสิน (เศรษฐสิน 
, Sethasin 
) , in the world, is an extremely rare last name. The cognomen เศรษฐสิน is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, เศรษฐสิน is the forename as well as the last name.
ภวสวัสดิ์คุณ, and มโนนึก