Cognomen Gargana (Gargana 
) , in the entire world, is a very rare last name. The cognomen Gargana is habitual in Italy, where it is a very rare surname, Australia, and Spain. Measured by absolute frequency, it is commonest in Italy, the United States, and Australia. Very seldom, Gargana is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gargana | Italy, Spain, Australia, United States, Greece |