Family name Montaño Guillen (Montaño Guillen 
) , in all the world, is a very rare cognomen. The surname Montaño Guillen is habitual in Ecuador, where it is a rare surname, Spain, where it is a very rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Montaño Guillen | Ecuador, Chile, Spain |