Worldwide, Ilyusa (Илюса 
, Ilyusa 
) is quite a rare dominantly girly, but infrequently boy's first name. The forename Ilyusa is habitual in Russia, where it is a rare dominantly feminine, but seldom masculine name, Kazakhstan, where it is a rare female name, and Poland, where it is a very rare girly name. Very seldom, Ilyusa is the last name as well as the forename.