Surname Илуна (Iluna 
, Илуна) , throughout the world, is a very rare family name. The cognomen Илуна is characteristic of Romania, where it is a rare surname, Spain, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Romania, Spain, and the United States. More prevalently, Илуна is the forename as well as the last name.