Globally, Mirta Teresa (Mirta Teresa 
) is a rare feminine first name. The forename Mirta Teresa is characteristic of Latin America and the Caribbean, particularly Paraguay, where it is quite a rare girly name, Chile, where it is a rare girly name, and Peru, where it is a very rare female name. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Paraguay, Chile, and Argentina. Much less frequently, Mirta Teresa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mirta Teresa | Peru, Colombia, Paraguay, Argentina, Chile |
Diaz, Lopez, Pareno, Romano, Davila, Olguin, Segovia, Cardenas, Hernandez, Bustamante, Haidamacha, Moreira Araya, Cardenas Barrientos, Fuenzalida Rivera, and Bustamante Alvarez