In the entire world, Damian Guillermo (Damian Guillermo 
) is a very rare masculine forename. The first name Damian Guillermo is habitual in Latin America and the Caribbean, particularly Chile, where it is a rare male name. Much less frequently, Damian Guillermo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Damian Guillermo | Mexico, Chile, Ecuador, Argentina, Peru |