Family name Gyser (Gyser 
, Gesier 
) , all around the world, is an extremely rare cognomen. The surname Gyser is characteristic of Venezuela, where it is an extremely rare surname, and the United States. More prevalently, Gyser is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gyser | South Africa, United States, Venezuela, Philippines |
| Gesier | United States, Brazil |