Throughout the world, Mariana Gladys (Mariana Gladys 
) is a very rare feminine first name. The forename Mariana Gladys is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare girly name. Much less frequently, Mariana Gladys is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mariana Gladys | Chile, Peru, Ecuador, Spain, Costa Rica |