Cognomen เส็งสิน (Seng Sin 
, เส็งสิน 
) , around the globe, is a very rare surname. The family name เส็งสิน is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Very seldom, เส็งสิน is the forename as well as the last name.