Cognomen Illar (Illar 
, Иллар 
) , in the entire world, is a rare surname. The surname Illar is characteristic of Hungary, where it is a rare surname, Myanmar, where it is a very rare surname, and the United States. Not in comparison with a country's population, the name is most common in the United States, Myanmar, and China. Likewise, Illar is the forename as well as the last name.