Family name Гилярий (Hilaris 
, Гилярий 
, Gilyarov ) , around the world, is a very rare cognomen. The last name Гилярий is characteristic of Greece, where it is a rare surname, Venezuela, where it is a very rare surname, and Norway. Measured by absolute frequency, it is the most numerous in the United States, Venezuela, and Greece. Likewise, Гилярий is the forename as well as the last name.