| ISO 639-2/T | art-002 |
| ina | |
| ISO 639-3 | art-001 | ina |
| ISO 639-2/B | art-003 | ina |
| ISO 639-1 | art-004 | ia |
| ISO 639-3 Reference Names | art-289 | Interlingua (International Auxiliary Language Association) |
| ISO 639-3 Print Names | art-290 | Interlingua (International Auxiliary Language Association) |
| ISO 639-3 Inverted Names | art-291 | Interlingua (International Auxiliary Language Association) |