Cognomen Jañas (Jañas 
) , in the entire world, is a very rare last name. The cognomen Jañas is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname, and Mexico. Very seldom, Jañas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jañas | Chile, Mexico, Spain |