Globally, Istvan (Istvan 
, Іштван 
, Иштван 
) is a common boy's first name. The first name Istvan is habitual in Hungary, where it is quite a common masculine name, Aland Islands, and Romania. In absolute terms, it most frequently occurs in Eastern Europe, particularly Hungary, Ukraine, and Romania. Likewise, Istvan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Istvan | Germany, Romania, Hungary, Serbia, United States |
| Іштван | Ukraine |
| Иштван | Kazakhstan, Russia, Belarus, Serbia, Ukraine |
| Истван | Russia |
Esteban, Esteve, Estevo, Estêvão, Etienne, Istvàn, István, Istvân, Iśtvan, Ištvan, Ištván, Rácz, Staffan, Steeve, Stef, Stefan, Stefano, Stefanos, Stefen, Steffan, Steffen, Stefán, Stepan, Stepas, Stephan, Stephane, Stephanus, Stephen, Steponas, Stevan, Steve, Steven, Stevo, Stiepan, Stiven, Stjepan, Stépan, Stéphane, Stěpan, Stīvs, Szczepan, Szűcs, Tapani, Étienne, Ístvan, Ístván, Štefan, Štěpán, Ștefan, Στέφανος,
Istvan is also a name for the fictitious and mythical characters: Takács István , character in Szomszédok.
| dezsi istvan RO (b. 1550) |
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| istvan szentandrássy bishop of the Roman Catholic Church (b. 1571) |
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| istvan nyary SK (b. 1585) |
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istvan andrassy Hungarian general (cca 1650-1720) (b. 1650) |
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| istvan huszti (1671-1704), UA (b. 1671) |
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| istvan szabo (1695-1753), SK (b. 1695) |
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| istvan nanasi RO (b. 1750) |
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| istvan nalaczy RO (b. 1770) |
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istvan čokor Austrian physician, veterinarian and university teacher, AT (b. 1849) |
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| istvan pribék Roman Catholic bishop (b. 1814) |
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istvan l'huillier gardener (1865-1931), SK (b. 1865) |
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| istvan delhaes HU (b. 1848) |
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| istvan istvan de nemes-szakacs (1886-1986) (b. 1886) |
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| istvan hajos holocaust victim, b. 1897-08-18, CZ (b. 1897) |
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istvan kantor Hungarian-Canadian artist and musician, CA (b. 1949) |
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