| English | eng-000 |
| Cornwall | |
| Afrikaans | afr-000 | Cornwall |
| Englisce sprǣc | ang-000 | Cornweall |
| Englisce sprǣc | ang-000 | Cornƿeall |
| العربية | arb-000 | كورنوال |
| Universal Networking Language | art-253 | Cornwall |
| Universal Networking Language | art-253 | cornwall(iof>county>thing) |
| Sambahsa-mundialect | art-288 | Kernew |
| ISO 3166-2 | art-416 | GB-CON |
| asturianu | ast-000 | Cornualles |
| বাংলা | ben-000 | কর্নওয়াল |
| brezhoneg | bre-000 | Kernev-Veur |
| български | bul-000 | Корнуол |
| català | cat-000 | Cornualla |
| čeština | ces-000 | Cornwall |
| 普通话 | cmn-000 | 康沃尔 |
| 國語 | cmn-001 | 康沃爾 |
| Middle Cornish | cnx-000 | Kernow |
| Kernowek | cor-000 | Kernow |
| Cymraeg | cym-000 | Cernyw |
| dansk | dan-000 | Cornwall |
| Deutsch | deu-000 | Cornwall |
| eesti | ekk-000 | Cornwall |
| ελληνικά | ell-000 | Κορνουάλη |
| ελληνικά | ell-000 | Κορνουάλλη |
| ελληνικά | ell-000 | Κόρνγουολ |
| Ellinika | ell-003 | Kornouáli |
| Esperanto | epo-000 | Cornwall |
| Esperanto | epo-000 | Kornvalo |
| euskara | eus-000 | Kornualles |
| suomi | fin-000 | Cornwall |
| français | fra-000 | Cornouailles |
| français | fra-000 | Cornwall |
| Romant | fro-000 | Cornuaille |
| Gàidhlig | gla-000 | A' Chòrn |
| Gàidhlig | gla-000 | A’ Chòrn |
| Gaeilge | gle-000 | Corn na Breataine |
| Gaeilge | gle-000 | Corn na Breataine an Corn |
| galego | glg-000 | Cornualles |
| galego | glg-000 | Cornualles - Kernow |
| galego | glg-000 | Cornwall |
| yn Ghaelg | glv-000 | Kernow |
| yn Ghaelg | glv-000 | Yn Chorn |
| ʻōlelo Hawaiʻi | haw-000 | Konewala |
| עברית | heb-000 | קורנוול |
| हिन्दी | hin-000 | कॉर्नवल |
| हिन्दी | hin-000 | कॉर्नवॉल |
| hornjoserbšćina | hsb-000 | Korniska |
| magyar | hun-000 | Cornwall |
| Ido | ido-000 | Kornwal |
| bahasa Indonesia | ind-000 | Cornwall |
| íslenska | isl-000 | Cornwall |
| íslenska | isl-000 | Kornbretaland |
| italiano | ita-000 | Cornovaglia |
| italiano | ita-000 | Cornwall |
| 日本語 | jpn-000 | コーンウォール |
| 日本語 | jpn-000 | コーンウォール郡 |
| 한국어 | kor-000 | 콘월 |
| 한국어 | kor-000 | 콘월 주 |
| Kölsch | ksh-000 | Cornwall |
| latine | lat-000 | Cornubia |
| Lingua Franca Nova | lfn-000 | Cerneu |
| lietuvių | lit-000 | Kornvalis |
| lengua lumbarda | lmo-000 | Cornwall |
| Lëtzebuergesch | ltz-000 | Cornwall |
| latviešu | lvs-000 | Kornvola |
| Bân-lâm-gú | nan-005 | Kernow |
| Nederlands | nld-000 | Cornwall |
| bokmål | nob-000 | Cornwall |
| occitan | oci-000 | Cornoalha |
| Old Cornish | oco-000 | Kernow |
| polski | pol-000 | Cornwall |
| polski | pol-000 | Kornwalia |
| português | por-000 | Cornualha |
| português | por-000 | Cornuália |
| português | por-000 | Cornwall |
| Runa Simi | que-000 | Cornwall |
| română | ron-000 | Cornwall |
| русский | rus-000 | Корнуолл |
| russkij | rus-001 | Kornuoll |
| lingua siciliana | scn-000 | Curnuvagghia |
| Scots leid | sco-000 | Cornwall |
| slovenčina | slk-000 | Cornwall |
| slovenščina | slv-000 | Cornwall |
| español | spa-000 | Cornualles |
| svenska | swe-000 | Cornwall |
| ภาษาไทย | tha-000 | มณฑลคอร์นวอลล์ |
| Türkçe | tur-000 | Cornwall |
| Talossan | tzl-000 | Carnaviacʼh |
| Volapük | vol-000 | Cornwall |
| Bahasa Malaysia | zsm-000 | Cornwall |