Family name Myriam Petronila (Myriam Petronila 
) , in all the world, is an extremely rare surname. The cognomen Myriam Petronila is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Myriam Petronila is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Myriam Petronila | Peru, Chile |