Last name Ilonka (Ilonka 
) , worldwide, is a rare cognomen. The surname Ilonka is habitual in Eastern Europe, particularly Hungary, where it is quite a rare surname, Romania, and Czechia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Romania, Hungary, and Indonesia. More frequently, Ilonka is the forename as well as the last name.
Nel, Vargas, Visser, Venter, Farkas, Ilieva, Ulrich, Schmidt, Aylward, Boerkamp, Horvat, Király, Jimenez, Ivanova, Comstock, Robinson, Gangadin, Gonzalez, Inerbichler, Schneider, Castaneda, Lütjen, Jansen, Gonczi, Garcia, Mace, Berg, Papp, Rank, Diaz, Jong, Nagy, Szabo, Barba, Beers, Perez, Ramos, Rooij, Doeve, Groot, Varga, Weber, Seamon, Becker, Kovač, Dekker, Rodriguez, and Espaillat