Family name Simsan (Simsan 
, ซิมป์สัน ) , throughout the world, is a rare last name. The family name Simsan is habitual in Bulgaria, where it is a rare surname, Thailand, where it is a very rare surname, and Malaysia. In absolute terms, it is commonest in India, Thailand, and Malaysia. More prevalently, Simsan is the forename as well as the last name.