Surname Romilio Antonio (Romilio Antonio 
) , in the entire world, is a very rare family name. The last name Romilio Antonio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More frequently, Romilio Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Romilio Antonio | Chile, Costa Rica, Sweden, Philippines |