Cognomen Gsan (غسان 
, Gsan 
) , worldwide, is a common family name. The cognomen Gsan is characteristic of Western Asia, particularly Syria, where it is quite a common surname, Iraq, and Lebanon, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Iraq, Syria, and Sudan. Predominantly, Gsan is the forename as well as the last name.