Last name Santo Cecilio (Santo Cecilio 
) , globally, is an extremely rare family name. The surname Santo Cecilio is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Santo Cecilio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Santo Cecilio | Costa Rica, Chile, Ecuador, Peru, Venezuela |