Family name Хиллар (Hillar 
, Хиллар 
) , in the entire world, is a rare surname. The last name Хиллар is habitual in Paraguay, where it is quite a rare surname, Argentina, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is commonest in Argentina, Poland, and Paraguay. Also, Хиллар is the forename as well as the last name.