Cognomen Sûr (Sûr 
, Сюр 
) , in all the world, is a rare surname. The surname Sûr is habitual in Cameroon, where it is a rare surname, Ukraine, and Morocco, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Ukraine, Cameroon, and Russia. Much less frequently, Sûr is the forename as well as the last name.