| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Georgian | South Caucasian | ქართული | ka | kat | geo | kat | ||
| German | Indo-European | Deutsch | de | deu | ger | deu | ||
| Gaelic | Scottish Gaelic | Indo-European | Gàidhlig | gd | gla | gla | gla | |
| Irish | Indo-European | Gaeilge | ga | gle | gle | gle | ||
| Galician | Indo-European | Galego | gl | glg | glg | glg | ||
| Manx | Indo-European | Gaelg; Gailck | gv | glv | glv | glv | ||
| Greek (modern) | Indo-European | ελληνικά | el | ell | gre | ell | ||
| Guaraní | Tupian | Avañe'ẽ | gn | grn | grn | grn + 5 | macrolanguage | |
| Gujarati | Indo-European | ગુજરાતી | gu | guj | guj | guj | ||
| Haitian | Haitian Creole | Creole | Kreyòl ayisyen | ht | hat | hat | hat |