Throughout the world, Sergio Reinaldo (Sergio Reinaldo 
) is a rare masculine first name. The forename Sergio Reinaldo is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a rare male name. Much less frequently, Sergio Reinaldo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sergio Reinaldo | Argentina, Peru, Ecuador, Spain, Chile |