| Kernowek | cor-000 |
| Keltes | |
| brezhoneg | bre-000 | kelt |
| català | cat-000 | celta |
| čeština | ces-000 | Kelt |
| Middle Cornish | cnx-000 | Keltes |
| Kernowek | cor-000 | Kelt |
| Cymraeg | cym-000 | Celt |
| dansk | dan-000 | kelter |
| Deutsch | deu-000 | Kelte |
| ελληνικά | ell-000 | Κέλτης |
| English | eng-000 | Celt |
| føroyskt | fao-000 | kelti |
| suomi | fin-000 | keltti |
| français | fra-000 | Celte |
| Gàidhlig | gla-000 | Ceilteach |
| Gaeilge | gle-000 | Ceilteach |
| yn Ghaelg | glv-000 | Celtiagh |
| Srpskohrvatski | hbs-001 | Kȅlt |
| Srpskohrvatski | hbs-001 | Kȅltkinja |
| עברית | heb-000 | קלטי |
| עברית | heb-000 | קלטית |
| magyar | hun-000 | kelta |
| արևելահայերեն | hye-000 | կելտ |
| 日本語 | jpn-000 | ケルト人 |
| 한국어 | kor-000 | 셀트족 |
| 한국어 | kor-000 | 켈트족 |
| latviešu | lvs-000 | ķeltiete |
| latviešu | lvs-000 | ķelts |
| reo Māori | mri-000 | Kereti |
| Nederlands | nld-000 | Kelt |
| Old Cornish | oco-000 | Keltes |
| polski | pol-000 | Celt |
| português | por-000 | celta |
| română | ron-000 | celți |
| русский | rus-000 | кельт |
| slovenčina | slk-000 | Kelt |
| slovenščina | slv-000 | Kelt |
| slovenščina | slv-000 | Keltinja |
| español | spa-000 | celta |