| latine | lat-000 |
| lingua Cambriana | |
| Afrikaans | afr-000 | Wallies |
| Englisce sprǣc | ang-000 | Wielisc sprǣc |
| العربية | arb-000 | لغة ويلزية |
| Classical Arabic—ASJP | arb-001 | waylziyah |
| brezhoneg | bre-000 | kembraeg |
| català | cat-000 | gal·lès |
| ᏣᎳᎩ ᎧᏬᏂᎯᏍᏗ | chr-000 | ᏪᎸᏏ |
| Tsalagi Gawonihisdi | chr-001 | welvsi |
| Hànyǔ | cmn-003 | Wēiěrshì yǔ |
| Kernowek | cor-000 | Kembrek |
| Cymraeg | cym-000 | Cymraeg |
| dansk | dan-000 | walisisk |
| Deutsch | deu-000 | Walisisch |
| eesti | ekk-000 | kõmri keel |
| ελληνικά | ell-000 | Ουαλικά |
| Ellinika | ell-003 | Oualiká |
| English | eng-000 | Welsh |
| Esperanto | epo-000 | kimra |
| euskara | eus-000 | Galesera |
| suomi | fin-000 | kymri |
| suomi | fin-000 | kymrin kieli |
| suomi | fin-000 | walesin kieli |
| français | fra-000 | gallois |
| français | fra-000 | gallouais |
| Gàidhlig | gla-000 | Cuimris |
| Gaeilge | gle-000 | Breatnais |
| galego | glg-000 | galés |
| yn Ghaelg | glv-000 | Bretnish |
| עברית | heb-000 | ולשית |
| ISO 259-3 | heb-001 | welšit |
| magyar | hun-000 | walesi |
| italiano | ita-000 | gallese |
| 日本語 | jpn-000 | ウェールズご, ''Wēruzu''-go |
| 日本語 | jpn-000 | ウェールズ語 |
| 한국어 | kor-000 | 웨일스어 |
| Hangungmal | kor-001 | Weilseu-eo |
| 台灣話 | nan-000 | 威爾士語 |
| Bân-lâm-gú | nan-005 | Cymru-gí |
| Nederlands | nld-000 | Kymrisch |
| Nederlands | nld-000 | Wels |
| Nederlands | nld-000 | Welsh |
| bokmål | nob-000 | walisisk |
| occitan | oci-000 | gallés |
| polski | pol-000 | walijski |
| português | por-000 | galês |
| română | ron-000 | limba galeză |
| română | ron-000 | limba velşă |
| русский | rus-000 | валлийский |
| slovenščina | slv-000 | valižanščina |
| español | spa-000 | galés |
| svenska | swe-000 | kymriska |
| svenska | swe-000 | valesiska |
| svenska | swe-000 | välska |
| lingaedje walon | wln-000 | Walès |
| Nourmaund | xno-000 | gallouais |
| 廣東話 | yue-000 | 威尔士语 |