Cognomen Qul (Qul 
) , all over the world, is a rare last name. The cognomen Qul is habitual in Azerbaijan, where it is quite a rare surname, Afghanistan, where it is a rare surname, and Saudi Arabia. Not in comparison with a country's population, this name is the most popular in Afghanistan, Saudi Arabia, and Bangladesh. Much less frequently, Qul is the forename as well as the last name.