| lea fakatonga | ton-000 |
| faka-Tonga | |
| ISO 639-3 | art-001 | ton |
| ISO 639-2/B | art-003 | ton |
| ISO 639-1 | art-004 | to |
| ISO 639 | art-005 | ton |
| ISO 639-PanLex | art-274 | ton-000 |
| ISO 639-3 Inverted Names | art-291 | Tonga (Tonga Islands) |
| IETF language tags | art-420 | to |
| 普通话 | cmn-000 | 东加语 |
| 普通话 | cmn-000 | 汤加语 |
| Deutsch | deu-000 | Tongaisch |
| English | eng-000 | Tonga |
| English | eng-000 | Tongan |
| suomi | fin-000 | tongalainen |
| français | fra-000 | tongan |
| русский | rus-000 | Тонга |
| русский | rus-000 | тонга |
| español | spa-000 | tongano |
| lea fakatonga | ton-000 | lea fakatonga |