| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Irish | Indo-European | Gaeilge | ga | gle | gle | gle | ||
| Gaelic | Scottish Gaelic | Indo-European | Gàidhlig | gd | gla | gla | gla | |
| Galician | Indo-European | Galego | gl | glg | glg | glg | ||
| Guaraní | Tupian | Avañe'ẽ | gn | grn | grn | grn + 5 | macrolanguage | |
| Gujarati | Indo-European | ગુજરાતી | gu | guj | guj | guj | ||
| Manx | Indo-European | Gaelg; Gailck | gv | glv | glv | glv | ||
| Hausa | Afro-Asiatic | (Hausa) هَوُسَ | ha | hau | hau | hau | ||
| Hebrew (modern) | Afro-Asiatic | עברית | he | heb | heb | heb | Changed in 1989 from original ISO 639:1988; iw | |
| Hindi | Indo-European | हिन्दी; हिंदी | hi | hin | hin | hin | ||
| Hiri Motu | Austronesian | Hiri Motu | ho | hmo | hmo | hmo |