Cognomen Jeffenson (Jeffenson 
) , all over the world, is an extremely rare surname. The surname Jeffenson is habitual in Latin America and the Caribbean, particularly Venezuela, where it is a very rare surname. Predominantly, Jeffenson is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jeffenson | Venezuela, United States, Brazil, Democratic Republic of the Congo |