Cognomen Fidel Isaac (Fidel Isaac 
) , across the world, is an extremely rare last name. The surname Fidel Isaac is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Fidel Isaac is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fidel Isaac | Chile, Ecuador, Mexico, Peru |