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Surname Ildikó (Ildiko , Ildikó , Илдико ) , globally, is quite a common family name. The surname Ildikó is habitual in Eastern Europe, particularly Hungary, where it is quite a common surname, Romania, and Slovakia, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Hungary, Romania, and Serbia. More prevalently, Ildikó is the forename as well as the last name.