Last name ผสาน (Phasan 
, ผสาน , Mergane 
) , around the world, is a rare cognomen. The family name ผสาน is habitual in Senegal, where it is quite a rare surname, Sudan, where it is a rare surname, and Thailand, where it is a very rare surname. In absolute terms, it is commonest in Senegal, Sudan, and Indonesia. Very seldom, ผสาน is the forename as well as the last name.