Surname Gema Johanna (Gema Johanna 
) , in all the world, is an extremely rare family name. The family name Gema Johanna is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Gema Johanna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gema Johanna | Ecuador, Chile |