Cognomen Lajas (Lajas 
) , worldwide, is a rare last name. The surname Lajas is characteristic of Portugal, where it is quite a rare surname, Spain, where it is a rare surname, and Bolivia. Measured by absolute frequency, this name is the most popular in Spain, Portugal, and Argentina. Much less frequently, Lajas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lajas | Portugal, Spain, Mexico, Argentina, Brazil |
| isabel lópez lajas Spanish writer, ES (b. 1884) |
|