Last name Guistin (Guistin 
) , throughout the world, is an extremely rare cognomen. The surname Guistin is characteristic of France, where it is an extremely rare surname, and Brazil. Much more frequently, Guistin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guistin | France, Brazil, Democratic Republic of the Congo, United States |