| English | eng-000 |
| Upper Chehalis | |
| ISO 639-3 | art-001 | cjh |
| ISO 639-PanLex | art-274 | cjh-000 |
| ISO 639-3 Inverted Names | art-291 | Chehalis, Upper |
| Glottolog Languoid Names | art-326 | Upper Chehalis |
| Glottocode | art-327 | uppe1439 |
| Glottolog Primary Key | art-328 | 24576 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 797 |
| Qʼwayʼayiłqʼ | cjh-000 | Qʼwayʼayiłqʼ |
| Qʼwayʼayiłqʼ | cjh-000 | qʼʷayʼáyiɬq |
| English | eng-000 | Chehalis |
| français | fra-000 | chehalis supérieur |
| français | fra-000 | haut-chehalis |
| español | spa-000 | chehalí alto |