Cognomen Симун (Simun 
, Símun 
, Симун 
) , across the world, is quite a rare family name. The cognomen Симун is habitual in Israel, where it is quite a common surname, Montenegro, where it is quite a rare surname, and Slovakia. In absolute terms, this name is the most popular in Indonesia, Israel, and Slovakia. Likewise, Симун is the forename as well as the last name.