Family name Janny-Gess (Janny-Gess 
) , around the world, is an extremely rare surname. Much more frequently, Janny-Gess is the forename as well as the last name. Parts of the name also exists independently as a first name Janny, and a first name Gess.
| VARIANT | COUNTRY |
|---|---|
| Janny-Gess | Democratic Republic of the Congo |