Last name Phasin (พศิน 
, Phasin 
, พศิณ ) , in the entire world, is a rare cognomen. The family name Phasin is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and Malaysia. More prevalently, Phasin is the forename as well as the last name.