Family name Herna Juana (Herna Juana 
) , throughout the world, is an extremely rare last name. The surname Herna Juana is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Herna Juana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Herna Juana | Chile |