All over the world, Nelly Guillermina (Nelly Guillermina 
) is a very rare feminine first name. The forename Nelly Guillermina is habitual in Latin America and the Caribbean, particularly Chile, where it is a rare female name, and Peru. Very seldom, Nelly Guillermina is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Nelly Guillermina | Peru, Argentina, Chile, Ecuador, Costa Rica |