Surname Gahun (Gahun 
) , around the globe, is a rare cognomen. The last name Gahun is characteristic of Malaysia, where it is a rare surname, Turkey, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Malaysia, Turkey, and India. Much less frequently, Gahun is the forename as well as the last name.