Surname Sobul (Sobul 
, Собуль 
) , across the world, is a rare last name. The last name Sobul is habitual in Bulgaria, where it is a rare surname, Kazakhstan, where it is a very rare surname, and the United States. Not in comparison with a country's population, it is the most numerous in the United States, Russia, and Bulgaria. Also, Sobul is the forename as well as the last name.