Last name Sarmiento Montero (Sarmiento Montero 
) , all over the world, is a very rare cognomen. The last name Sarmiento Montero is characteristic of Latin America and the Caribbean, particularly Ecuador, where it is a rare surname, Colombia, where it is a very rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sarmiento Montero | Colombia, Ecuador, Chile |