| Nederlands | nld-000 |
| Kymrisch | |
| Afrikaans | afr-000 | Wallies |
| Afrikaans | afr-000 | Walliser |
| Englisce sprǣc | ang-000 | Wielisc sprǣc |
| Englisce sprǣc | ang-000 | wealh |
| العربية | arb-000 | ولزي |
| Classical Arabic—ASJP | arb-001 | waylziyah |
| ISO 639 | art-005 | cym |
| Kotava | avk-000 | Kymrava |
| azərbaycanca | azj-000 | Valli dili |
| беларуская | bel-000 | валі́йская |
| беларуская | bel-000 | валі́йская мо́ва |
| brezhoneg | bre-000 | Kembread |
| brezhoneg | bre-000 | Kembreadez |
| brezhoneg | bre-000 | kembraeg |
| български | bul-000 | уелски |
| català | cat-000 | Gal·lesa |
| català | cat-000 | Gal·lès |
| català | cat-000 | gal·lesos |
| català | cat-000 | gal·lès |
| català | cat-000 | gaŀlès |
| čeština | ces-000 | Velšan |
| čeština | ces-000 | Velšané |
| čeština | ces-000 | Walesan |
| čeština | ces-000 | velština |
| Tsalagi Gawonihisdi | chr-001 | welvsi |
| 普通话 | cmn-000 | 威尔士语 |
| 普通话 | cmn-000 | 威尔斯语 |
| 國語 | cmn-001 | 威爾士語 |
| 國語 | cmn-001 | 威爾斯語 |
| Hànyǔ | cmn-003 | Wēiěrshì yǔ |
| Hànyǔ | cmn-003 | wēi ěr shì yu |
| Kernowek | cor-000 | Kembrek |
| Kernowek | cor-000 | kembrek |
| Cymraeg | cym-000 | Brython |
| Cymraeg | cym-000 | Brythoneg |
| Cymraeg | cym-000 | Cymraeg |
| Cymraeg | cym-000 | Cymreig |
| Cymraeg | cym-000 | Cymro |
| dansk | dan-000 | walisisk |
| Deutsch | deu-000 | Kymrisch |
| Deutsch | deu-000 | Waliser |
| Deutsch | deu-000 | Walisisch |
| Deutsch | deu-000 | walisische Sprache |
| eesti | ekk-000 | kõmri keel |
| eesti | ekk-000 | kõmrid |
| eesti | ekk-000 | uelsi keel |
| ελληνικά | ell-000 | Ουαλικά |
| ελληνικά | ell-000 | ουαλικός |
| ελληνικά | ell-000 | ουαλλικά |
| Ellinika | ell-003 | Oualiká |
| English | eng-000 | Cymric |
| English | eng-000 | Welsh |
| English | eng-000 | taff |
| Esperanto | epo-000 | kimra |
| Esperanto | epo-000 | kimra lingvo |
| Esperanto | epo-000 | kimro |
| euskara | eus-000 | Galesera |
| euskara | eus-000 | galesera |
| suomi | fin-000 | kymri |
| suomi | fin-000 | kymrin kieli |
| suomi | fin-000 | wales |
| suomi | fin-000 | walesilainen |
| suomi | fin-000 | walesin kieli |
| français | fra-000 | Gallois |
| français | fra-000 | gallois |
| français | fra-000 | gallouais |
| Romant | fro-000 | Galois |
| Frysk | fry-000 | Welsk |
| Gàidhlig | gla-000 | Cuimreach |
| Gàidhlig | gla-000 | Cuimris |
| Gaeilge | gle-000 | Bhreatnais |
| Gaeilge | gle-000 | Breatnach |
| Gaeilge | gle-000 | Breatnais |
| galego | glg-000 | galés |
| yn Ghaelg | glv-000 | Bretnagh |
| yn Ghaelg | glv-000 | Bretnish |
| Srpskohrvatski | hbs-001 | velški |
| עברית | heb-000 | וולשית |
| עברית | heb-000 | ולשית |
| ISO 259-3 | heb-001 | welšit |
| hrvatski | hrv-000 | velški |
| magyar | hun-000 | walesi |
| արևելահայերեն | hye-000 | կիմրերեն |
| արևելահայերեն | hye-000 | ուելսերեն |
| արևելահայերեն | hye-000 | վալլիերեն |
| interlingua | ina-000 | gallese |
| íslenska | isl-000 | velska |
| italiano | ita-000 | gallese |
| la lojban. | jbo-000 | mraigo |
| 日本語 | jpn-000 | ウェールズご, ''Wēruzu''-go |
| 日本語 | jpn-000 | ウェールズ人 |
| 日本語 | jpn-000 | ウェールズ語 |
| ქართული | kat-000 | უელსური |
| ភាសាខ្មែរ | khm-000 | វែល |
| Kurmancî | kmr-000 | weylsî |
| 한국어 | kor-000 | 웨일스 사람의 |
| 한국어 | kor-000 | 웨일스말 |
| 한국어 | kor-000 | 웨일즈 사람 |
| 한국어 | kor-000 | 웰쉬어 |
| Hangungmal | kor-001 | Weilseu-eo |
| latine | lat-000 | lingua Cambriana |
| Lingua Franca Nova | lfn-000 | Cimrica |
| Limburgs | lim-000 | Gkuuemraegke |
| latviešu | lvs-000 | velsiešu |
| मराठी | mar-000 | वेल्श |
| македонски | mkd-000 | Велшанец |
| македонски | mkd-000 | велшки |
| Bân-lâm-gú | nan-005 | Cymru-gí |
| napulitano | nap-000 | gallese |
| Plattdüütsch-Neddersassisch | nds-002 | Waliesch |
| Nederlands | nld-000 | Cymraeg |
| Nederlands | nld-000 | Wels |
| Nederlands | nld-000 | Welsh |
| Nederlands | nld-000 | Welshman |
| Nederlands | nld-000 | Welshmen |
| nynorsk | nno-000 | kymrisk |
| nynorsk | nno-000 | velsk |
| nynorsk | nno-000 | walisisk |
| bokmål | nob-000 | kymrisk |
| bokmål | nob-000 | velsk |
| bokmål | nob-000 | walisisk |
| नेपाली | npi-000 | वेल्श |
| occitan | oci-000 | gallés |
| فارسی | pes-000 | ولزي |
| فارسی | pes-000 | ولزی |
| lenga piemontèisa | pms-000 | galèis |
| polski | pol-000 | Walijczyk |
| polski | pol-000 | Walijski |
| polski | pol-000 | język walijski |
| polski | pol-000 | walijski |
| português | por-000 | Galês |
| português | por-000 | galês |
| română | ron-000 | galeză |
| română | ron-000 | limba galeză |
| română | ron-000 | limba velşă |
| română | ron-000 | limba velșă |
| română | ron-000 | velșă |
| русский | rus-000 | валли́йский |
| русский | rus-000 | валли́йский язы́к |
| русский | rus-000 | валлийский |
| русский | rus-000 | уэ́льский |
| Goídelc | sga-000 | Bretnach |
| slovenčina | slk-000 | waleština |
| slovenščina | slv-000 | valižanščina |
| español | spa-000 | galés |
| српски | srp-000 | велшки |
| srpski | srp-001 | velški |
| svenska | swe-000 | kymriska |
| svenska | swe-000 | valesiska |
| svenska | swe-000 | välska |
| svenska | swe-000 | walesiska |
| తెలుగు | tel-000 | వెల్ష్ |
| ภาษาไทย | tha-000 | ภาษาชาวเวลส์ |
| Türkçe | tur-000 | Galce |
| українська | ukr-000 | валійська |
| اردو | urd-000 | ويلش |
| Volapük | vol-000 | Velsänapük |
| lingaedje walon | wln-000 | Walès |