Surname Damian Guillermo (Damian Guillermo 
) , in the entire world, is an extremely rare cognomen. The surname Damian Guillermo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Damian Guillermo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Damian Guillermo | Mexico, Argentina, Peru, Ecuador, Chile |