Cognomen Poban (Poban 
) , in the world, is a very rare family name. The last name Poban is habitual in Thailand, where it is a rare surname, Nicaragua, where it is a very rare surname, and the United States, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Thailand, India, and Nicaragua. More frequently, Poban is the forename as well as the last name.