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Worldwide, Ištvan (István , Ištvan , Иштван ) is a common boy's forename. The first name Ištvan is characteristic of Eastern Europe, particularly Hungary, where it is a common masculine name, Romania, where it is quite a common boy's name, and Slovakia. Much less frequently, Ištvan is the last name as well as the forename.
Ištvan is also a name for the fictitious and mythical characters: Takács István , character in Szomszédok and István , the operatic character in the opera Mária Bátori, Bátori Mária.