Worldwide, Mariela Alejandra (Mariela Alejandra 
) is quite a rare feminine forename. The forename Mariela Alejandra is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a common girly name, Costa Rica, where it is quite a rare female name, and Uruguay, where it is a rare feminine name. Measured by absolute frequency, it most frequently occurs in Latin America and the Caribbean, particularly Chile, Argentina, and Peru. Much less frequently, Mariela Alejandra is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mariela Alejandra | Argentina, Costa Rica, Peru, Ecuador, Chile |