Family name Tunaca (Tunaca 
) , worldwide, is a very rare last name. The surname Tunaca is habitual in El Salvador, where it is a rare surname, Chile, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Latin America and the Caribbean, particularly El Salvador, Chile, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Tunaca | India, Malaysia, El Salvador, Chile, Brazil |