Family name Ivanjko (Ivanjko 
) , all around the world, is a rare surname. The cognomen Ivanjko is habitual in Southern Europe, particularly Croatia, where it is quite a rare surname, Slovenia, and Bosnia and Herzegovina.
| VARIANT | COUNTRY |
|---|---|
| Ivanjko | Bosnia and Herzegovina, Germany, Croatia, Slovenia |
| šime ivanjko HR (b. 1940) |
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| štefan ivanjko SI |
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| sašo kovačič ivanjko SI |
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| leo ivanjko SI |
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Mr, Josip, Vesna, Vlado, Filip, Irena, Ivana, Ivica, Šime, Marija, Martin, Marjan, Matija, Miško, Mladen, Sandro, Slavko, Branko, Robert, Renata, Rudolf, Danica, Damir, Davor, David, Darko, Ana, Leo, Sara, Dino, Tina, Nada, Niko, Nina, Nera, Ivan, Damjan, Olga, Mario, Marta, Marko, Milan, Milka, Anica, Anže, Bruno, Karlo, Petra, Marin, and Lorena