| ISO 639-3 | art-001 |
| ltz | |
| ISO 639-2/T | art-002 | ltz |
| ISO 639-2/B | art-003 | ltz |
| ISO 639-1 | art-004 | lb |
| ISO 639-3 Reference Names | art-289 | Luxembourgish |
| ISO 639-3 Print Names | art-290 | Letzeburgesch |
| ISO 639-3 Print Names | art-290 | Luxembourgish |
| ISO 639-3 Inverted Names | art-291 | Letzeburgesch |
| ISO 639-3 Inverted Names | art-291 | Luxembourgish |
| Ethnologue Primary Language Names | art-323 | Luxembourgish |
| Glottolog Languoid Names | art-326 | Luxembourgish |
| Glottocode | art-327 | luxe1241 |
| Glottolog Primary Key | art-328 | 37133 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 424 |
| Ethnologue Language Names | art-330 | Frankish |
| Ethnologue Language Names | art-330 | Letzburgisch |
| Ethnologue Language Names | art-330 | Luxembourgeois |
| Ethnologue Language Names | art-330 | Luxembourgish |
| Ethnologue Language Names | art-330 | Luxemburgian |
| Ethnologue Language Names | art-330 | Luxemburgish |
| Ethnologue Language Names | art-330 | Lëtzebuergesch |
| Ethnologue Language Names | art-330 | Moselle Franconian |
| Ethnologue Language Names | art-330 | Platt |
| 普通话 | cmn-000 | 卢森堡语 |
| Deutsch | deu-000 | Luxemburgisch |
| English | eng-000 | Letzeburgesch |
| English | eng-000 | Luxembourgish |
| English | eng-000 | Moselle Franconian |
| français | fra-000 | francique mosellan |
| français | fra-000 | luxembourgeois |
| Lëtzebuergesch | ltz-000 | Lëtzebuergesch |
| русский | rus-000 | люксембургский |
| español | spa-000 | franconio del Mosela |
| español | spa-000 | luxemburgués |