Cognomen Rogul (Rogul 
, Рогуль 
) , in the entire world, is a rare last name. The cognomen Rogul is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, and Russia, where it is a very rare surname. Measured by absolute frequency, it is commonest in Russia, Ukraine, and the United States. Much less frequently, Rogul is the forename as well as the last name.