Family name Romulo Agustin (Romulo Agustin 
) , throughout the world, is an extremely rare last name. The surname Romulo Agustin is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Romulo Agustin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Romulo Agustin | Peru, Ecuador, Chile, Costa Rica |
Lizana, and Molina Ganchozo