Surname Rojas Calderón (Rojas Calderón 
) , globally, is a very rare family name. The last name Rojas Calderón is habitual in Latin America and the Caribbean, particularly Costa Rica, where it is a very rare surname, Colombia, and Peru, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Colombia, Peru, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Rojas Calderón | Spain, Peru, Chile, Colombia, Costa Rica |