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