| ISO 639-3 Inverted Names | art-291 |
| tlhIngan Hol | |
| ISO 639-3 | art-001 | tlh |
| ISO 639-2/T | art-002 | tlh |
| ISO 639-2/B | art-003 | tlh |
| ISO 639-3 Reference Names | art-289 | Klingon |
| ISO 639-3 Print Names | art-290 | Klingon |
| ISO 639-3 Print Names | art-290 | tlhIngan Hol |
| ISO 639-3 Inverted Names | art-291 | Klingon |