In the entire world, Gagner (Gain 
, Gajni 
, Gagne 
) is quite a rare gender-neutral given name. The first name Gagner is characteristic of the Democratic Republic of the Congo, where it is a rare male name, South Korea, where it is a rare female name, and India, where it is a rare gender-neutral name. Not in comparison with a country's population, it is commonest in India, the Democratic Republic of the Congo, and Indonesia. Much more prevalently, Gagner is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gain | France, Canada, United States, India, Bangladesh |
| Gajni | Germany, North Macedonia, United States, Saudi Arabia, India |
| Gagne | Philippines, France, Canada, United States, India |
| Gagner | France, Canada, United States, India, New Zealand |