Cognomen Ильдико (Ildiko 
, Ildikó , Ildico 
) , globally, is quite a common surname. The family name Ильдико is habitual in Eastern Europe, particularly Hungary, where it is quite a common surname, Romania, and Slovakia, where it is quite a rare surname. In absolute terms, it most frequently occurs in Hungary, Romania, and Serbia. More prevalently, Ильдико is the forename as well as the last name.