Surname Felsa (Felsa 
) , in the world, is a rare last name. The surname Felsa is habitual in Latvia, where it is quite a rare surname, Indonesia, where it is a very rare surname, and Spain, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Indonesia, Latvia, and Mexico. Also, Felsa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Felsa | Philippines, Spain, India, Latvia, Indonesia |