Last name Guillant (Guillant 
) , all around the world, is a rare surname. The last name Guillant is characteristic of France, where it is a rare surname, Brazil, where it is a very rare surname, and the United States, where it is an extremely rare surname. Likewise, Guillant is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guillant | Brazil, Democratic Republic of the Congo, United States, France |
| louis le guillant French psychiatrist, FR (b. 1900) |
|
|
| andré guillant French politician, FR (b. 1902) |
|
|
| germaine le guillant FR (b. 1909) |
|