| ISO 639-3 | art-001 |
| efi | |
| ISO 639-2/T | art-002 | efi |
| ISO 639-2/B | art-003 | efi |
| ISO 639-3 Reference Names | art-289 | Efik |
| ISO 639-3 Print Names | art-290 | Efik |
| ISO 639-3 Inverted Names | art-291 | Efik |
| Ethnologue Primary Language Names | art-323 | Efik |
| Glottolog Languoid Names | art-326 | Efik |
| Glottocode | art-327 | efik1245 |
| Glottolog Primary Key | art-328 | 32144 |
| Ethnologue Language Names | art-330 | Calabar |
| Ethnologue Language Names | art-330 | Efik |
| 普通话 | cmn-000 | 埃菲克语 |
| English | eng-000 | Efik |
| français | fra-000 | efik |
| русский | rus-000 | эфик |