Cognomen Sixto Fabian (Sixto Fabian 
) , all around the world, is an extremely rare family name. The cognomen Sixto Fabian is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Sixto Fabian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sixto Fabian | Peru, Argentina, Chile, Ecuador, Costa Rica |