Family name Fernicia (Fernicia 
) , across the world, is an extremely rare cognomen. The surname Fernicia is characteristic of Latin America and the Caribbean, particularly Argentina, where it is an extremely rare surname, and Mexico. Much more frequently, Fernicia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fernicia | Mexico, Democratic Republic of the Congo, Brazil, United States, Argentina |