Family name Gismon (Gismon 
) , in the world, is a very rare last name. The last name Gismon is habitual in Venezuela, where it is a very rare surname, and France, where it is an extremely rare surname. Much more prevalently, Gismon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gismon | France, Democratic Republic of the Congo, Brazil, India, Venezuela |