Surname Souto-Maior (Souto-Maior 
) , around the globe, is an extremely rare family name. The cognomen Souto-Maior is characteristic of France, where it is an extremely rare surname, the United States, and Brazil. Parts of the name also exists independently as a last name Souto, and a last name Maior.
| VARIANT | COUNTRY |
|---|---|
| Souto-Maior | Brazil, France, United States |
| francisco de souto-maior Portuguese colonial administrator, PT |
|