Cognomen Souphab (Souphab 
) , throughout the world, is quite a rare surname. The last name Souphab is characteristic of Laos, where it is quite a common surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Laos, Thailand, and China. Also, Souphab is the forename as well as the last name.