In all the world, Иоаннис (Ioannis 
, Yannis , Yoannis 
) is a prevalent male forename. The first name Иоаннис is characteristic of Greece, where it is a prevalent male name, Cyprus, where it is quite a common male name, and Hong Kong, where it is quite a rare predominantly girly, but scarcely masculine name. Measured by absolute frequency, it is commonest in Greece, Germany, and France. Also, Иоаннис is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Yannis, Ioannis | Germany, Cyprus, United States, Greece, France |
| Yoannis | South Africa, United States, Cuba, France, Venezuela |
| Иоаннис | Russia |
Džons, Erwann, Evan, Gian, Gianni, Giannis, Giovan, Giovanni, Giuàn, Hannes, Hanns, Hans, Hatzigiannis, Honsa, Honza, Huans, Ian, Ianka, Ieuan, Ifan, Ioan, Ioanis, Ioann, Ioannes, Ion, Ionnis, Ionut, Ionuț, Ivan, Ivano, Ivans, Ivashka, Ivo, Iván, Iwan, Iwo, Jaan, Jack, Jan, Janis, Janka, Janos, Jean, Jehan, Jhoao, Joan, Joanis, Joannes, Joannis, Joao,
Иоаннис is also a name for the fictitious and mythical characters: Ioannis Atzypotheodoros , the theatrical character in the play "Theofano".
Иоарданидис, Георгиадис, Михаилидис, Мавроматис, Сотириадис, Дамианидис, Пастухов, Маскалидис, Кизиридис, Янакидис, Феликиди, Какосимидис, Чартоматзидис, Сымеонидис, Ефтхымиадис, Литсиос, Моысиадис, Канксиди, Крокос, Нтеманет, Пападопоулос, and Григориадис