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