Cognomen Roulan (Рулан 
, Roulan 
) , throughout the world, is a very rare family name. The surname Roulan is characteristic of Kyrgyzstan, where it is a very rare surname, France, and the United States. Not in comparison with a country's population, this name is the most popular in the United States, France, and Brazil. More prevalently, Roulan is the forename as well as the last name.