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Throughout the world, Illas (Las , Illas ) is quite a common epicene forename. The first name Illas is habitual in Bahamas, where it is quite a rare feminine name, Tunisia, where it is quite a rare principally masculine, but very infrequently female name, and Iraq, where it is quite a rare gender-neutral name. In absolute terms, it most frequently occurs in India, Iraq, and Indonesia. Also, Illas is the last name as well as the forename.
Illas is also a name for the fictitious and mythical characters: Las , the mythical founder of Las in Lakonia, Greece; Las , the character from Greek mythology and Las .