Worldwide, Plesse-Janson (Plesse-Janson 
) is an extremely rare unknown gender given name. Much more frequently, Plesse-Janson is the last name as well as the forename. Parts of the name also exists independently as a last name Plesse, and a last name Janson.
| VARIANT | COUNTRY |
|---|---|
| Plesse-Janson | Germany |