In all the world, Illja (Ілля 
, Илля 
, Illja 
) is a common boy's forename. The forename Illja is habitual in Eastern Europe, particularly Ukraine, where it is a common male name, Belarus, where it is a rare male name, and Czechia.
| VARIANT | COUNTRY |
|---|---|
| Ілля | Ukraine, Belarus |
| Илля | Kazakhstan, Ukraine, Russia |
| Illja | Germany, Ukraine, Czechia, United States |
Elia, Eliahu, Elias, Eliasz, Elie, Elies, Elija, Eliyahu, Eliáš, Ellie, Elías, Ilia, Ilias, Ilie, Ilija, Ilià, Iliá, Ilja, Illa, Illia, Illya, Ilya, Ilyas, Élie, Ελίας, Ηλίας, Елиа, Илиан, Илиас, Илие, Илия, Илија, Илко, Иллйа, Илчо, Ильюша, Илья, Ильяс, Илюха, Илюша, Иля, Эли, Элиа, Элиас, Элиаш, Ілияс, Ілья, Іліас, איליה, אליאס,
Illja is also a name for the fictitious and mythical characters: Illya Kuryakin , the fictional character from The Man From U.N.C.L.E.; Ilia Volyova , the fictional ultranaut in Revelation Space; Ilya Afanasyevich Shamrayev , the character in the play "The Seagull"; Ilya Ilyich Oblomov , character in Oblomov and Iliya Ilich Telyegin , the character in the play "Uncle Vanya".
| illja ulic Peerage person ID=400979 |
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| illja j diets researcher (ORCID 0000-0001-7603-8898) |
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| illja krawtschenko |
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