Ilonka \i-lon-ka, il(o)-nka\ as a girl's name is a variant of Alona (Hebrew) and Ilona (Hungarian, Greek), and the meaning of Ilonka is "oak tree; light".

The baby name Ilonka sounds like Alenka and Olenka. Other similar baby names are Ilonna, Blanka, Ilana, Ilka, Ilania, Ilena, Ilone, Illona, Irenka and Ivanka.