Cognomen Rosoul (Росул 
, Rosoul 
) , in the entire world, is a rare last name. The family name Rosoul is habitual in Ukraine, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Russia. Not in comparison with a country's population, the name is most common in Ukraine, Russia, and India. Very seldom, Rosoul is the forename as well as the last name.