Last name Gaiso (Gaiso 
) , around the world, is a very rare family name. The last name Gaiso is habitual in Italy, where it is a very rare surname, Brazil, where it is an extremely rare surname, and the United States. Likewise, Gaiso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaiso | Germany, Italy, United States, India, Brazil |