All around the world, Ильиа (Illia 
, Ильиа 
) is a rare unisex first name. The forename Ильиа is characteristic of Slovakia, where it is a rare male name, Belarus, and Switzerland. Not in comparison with a country's population, this name is the most popular in Nigeria, the United States, and Indonesia. Likewise, Ильиа is the last name as well as the forename.