Surname Montsa (Montsa 
) , in all the world, is a very rare last name. The cognomen Montsa is characteristic of South Africa, where it is a rare surname, and Thailand, where it is a very rare surname. Much less frequently, Montsa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Montsa | Thailand, India, Spain, South Africa |