Family name Janneth (Janneth 
) , in all the world, is quite a common cognomen. The last name Janneth is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare surname, Mexico, and Colombia. More prevalently, Janneth is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Janneth | Colombia, Tanzania, Philippines, Bolivia, Mexico |