Cognomen Blanca Johanna (Blanca Johanna 
) , around the world, is an extremely rare last name. The cognomen Blanca Johanna is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more prevalently, Blanca Johanna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Blanca Johanna | Bolivia, Chile, Mexico, Ecuador, Costa Rica |