Worldwide, Illes (Illes 
, Illés 
) is a rare gender-neutral first name. The forename Illes is habitual in Eastern Europe, particularly Hungary, where it is quite a rare unisex name, Slovakia, where it is quite a rare male name, and Romania, where it is a rare male name. Not in comparison with a country's population, it is the most numerous in Hungary, Romania, and Madagascar. More prevalently, Illes is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Illes | Germany, Romania, Hungary, United States, Slovakia |
| Illés | Germany, Hungary, United States, Canada, Slovakia |
Elia, Elias, Eliasz, Elie, Elies, Eliáš, Ellie, Elías, Ilias, Ilie, Ilija, Iliá, Ilja, Illeš, Illyés, Illès, Ilya, Élie, Ìllěs, Ελίας, Ηλίας, Елиа, Илеш, Илиан, Илиас, Илие, Илия, Илија, Илко, Иллес, Иллеш, Иллёс, Илчо, Илья, Эли, Элиа, Элиас, Элиаш, Іллес, Іллесь, Ілля, Ілья, Іліас, איליה, אילש, אליאס, إليا, إلياس, إيلي, إيليا,
| walther illes badminton player, SR (b. 1947) |
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