| Language | Name | Code |
|---|---|---|
| Afrikaans | Reykjavik | af |
| Amharic | ሬይኪያቪክ | am |
| Aragonese | Reykjavík | an |
| ang | Rēcwīc | ang |
| Arabic | ريكيافيك | ar |
| ary | رايكياڤيك | ary |
| arz | ريكيافيك | arz |
| Asturian | Reikiavik | ast |
| Avaric | Рейкявик | av |
| avk | Reykjavík | avk |
| Aymara | Reykjavik | ay |
| Azerbaijani | Reykyavik | az |
| Bashkir | Рейкьявик | ba |
| ban | Reykjavik | ban |
| Bavarian | Reykjavík | bar |
| bcl | Reykjavík | bcl |
| Belarusian | Рэйк’явік | be |
| be-tarask | Рэйк’явік | be-tarask |
| bew | Rékiawik | bew |
| Bulgarian | Рейкявик | bg |
| Bengali | রেইকিয়াভিক | bn |
| Tibetan | རེཀ་ཇ་བིཀ། | bo |
| Breton | Reykjavík | br |
| Bosnian | Reykjavík | bs |
| Catalan | Reykjavík | ca |
| cbk-zam | Reykjavik | cbk-zam |
| cdo | Reykjavík | cdo |
| Chechen | Рейкьявик | ce |
| Cebuano | Reykjavíkurborg | ceb |
| Central Kurdish | ڕێکیاڤیک | ckb |
| Corsican | Reykjavík | co |
| Czech | Reykjavík | cs |
| csb | Reykjavík | csb |
| Church Slavic | Рєикꙗвикъ | cu |
| Chuvash | Рейкьявик | cv |
| Welsh | Reykjavík | cy |
| Danish | Reykjavik | da |
| German | Reykjavík | de |
| diq | Reykjavík | diq |
| dsb | Reykjavík | dsb |
| Ewe | Reykjavík | ee |
| Modern Greek (1453-) | Ρέυκιαβικ | el |
| English | Reykjavík | en |
| en-gb | Reykjavík | en-gb |
| Esperanto | Rejkjaviko | eo |
| Spanish | Reikiavik | es |
| Estonian | Reykjavík | et |
| Basque | Reykjavik | eu |
| Persian | ریکیاویک | fa |
| Finnish | Reykjavík | fi |
| Faroese | Reykjavík | fo |
| French | Reykjavik | fr |
| frr | Reykjavik | frr |
| Western Frisian | Reykjavík | fy |
| Irish | Réicivíc | ga |
| Scottish Gaelic | Reykjavík | gd |
| Galician | Reiquiavik | gl |
| Guaraní | Reikiavik | gn |
| gsw | Reykjavík | gsw |
| Gujarati | રિકિયવિક | gu |
| Manx | Reykjavík | gv |
| hak | Reykjavík | hak |
| haw | Reykjavík | haw |
| Hebrew | רייקיאוויק | he |
| Hindi | रेक्जाविक | hi |
| hif | Reykjavík | hif |
| Croatian | Reykjavik | hr |
| Upper Sorbian | Reykjavík | hsb |
| Haitian | Rèkyavik | ht |
| Hungarian | Reykjavík | hu |
| Armenian | Ռեյկյավիկ | hy |
| hyw | Ռեյքիավիք | hyw |
| Interlingua (International Auxiliary Language Association) | Reykjavik | ia |
| Indonesian | Reykjavík | id |
| Interlingue | Reykjavík | ie |
| ilo | Reykjavík | ilo |
| Ido | Reykjavík | io |
| Icelandic | Reykjavík | is |
| Italian | Reykjavík | it |
| Japanese | レイキャヴィーク | ja |
| Javanese | Reykjavík | jv |
| Georgian | რეიკიავიკი | ka |
| kab | Reykyabik | kab |
| kbp | Reyikzaavikii | kbp |
| Kazakh | Рейкиявик | kk |
| kk-cyrl | Рейкиявик | kk-cyrl |
| Kalaallisut | Reykjavík | kl |
| Kannada | ರೇಕೆವಿಕ್ | kn |
| Korean | 레이캬비크 | ko |
| Kurdish | Reykjavik | ku |
| Komi | Рейкьявик | kv |
| Cornish | Reykjavík | kw |
| Kirghiz | Рейкьявик | ky |
| Latin | Reykiavica | la |
| lad | Reikiavik | lad |
| Luxembourgish | Reykjavík | lb |
| lfn | Reykjavik | lfn |
| Limburgan | Reykjavík | li |
| lij | Reykjavík | lij |
| lmo | Reykjavik | lmo |
| Lingala | Reykjavík | ln |
| lrc | ریکاویک | lrc |
| Lithuanian | Reikjavikas | lt |
| Latvian | Reikjavīka | lv |
| mdf | Рэйкьявик | mdf |
| Malagasy | Reykjavík | mg |
| mhr | Рейкьявик | mhr |
| Maori | Reykjavik | mi |
| Macedonian | Рејкјавик | mk |
| Malayalam | റെയിക്യാവിക് | ml |
| Mongolian | Рейкьявик | mn |
| Marathi | रेक्याविक | mr |
| Malay (macrolanguage) | Reykjavík | ms |
| Maltese | Reykjavik | mt |
| mul | Reykjavík | mul |
| myv | Рейкьявик ош | myv |
| mzn | ریکیاویک | mzn |
| Nauru | Reykjavík | na |
| nah | Reikiavik | nah |
| nan | Reykjavík | nan |
| Norwegian Bokmål | Reykjavík | nb |
| Low German | Reykjavík | nds |
| nds-nl | Reykjavik | nds-nl |
| Dutch | Reykjavik | nl |
| Norwegian Nynorsk | Reykjavík | nn |
| nov | Reykjavík | nov |
| Navajo | Siil Nástłʼah | nv |
| Occitan (post 1500) | Reykjavík | oc |
| Livvi | Reikjavik | olo |
| Oriya (macrolanguage) | ରେକ୍ଜାଭିକ | or |
| Ossetian | Рейкьявик | os |
| Panjabi | ਰੇਕਿਆਵਿਕ | pa |
| pap | Reykjavík | pap |
| pih | Reykjavík | pih |
| Polish | Reykjavík | pl |
| pms | Reykjavík | pms |
| pnb | ریکجاوک | pnb |
| Portuguese | Reykjavík | pt |
| pt-br | Reykjavík | pt-br |
| Quechua | Reykjavík | qu |
| rmy | Reykjavík | rmy |
| Romanian | Reykjavík | ro |
| Russian | Рейкьявик | ru |
| rue | Рейкьявик | rue |
| rup | Reikiavic | rup |
| Kinyarwanda | Reykjavík | rw |
| sah | Рейкьявик | sah |
| Sardinian | Reykjavík | sc |
| Sicilian | Reykjavík | scn |
| Scots | Reykjavík | sco |
| Sindhi | ريڪجاويڪ | sd |
| Northern Sami | Reykjavík | se |
| Sango | Reykjavik | sg |
| sgs | Rėikjavėks | sgs |
| sh | Rejkjavik | sh |
| Sinhala | රේකවික් | si |
| Slovak | Reykjavík | sk |
| Slovenian | Reykjavík | sl |
| Shona | Reykjavík | sn |
| Albanian | Rejkjavik | sq |
| Serbian | Рејкјавик | sr |
| sr-ec | Рејкјавик | sr-ec |
| Southern Sotho | Reykjavík | st |
| stq | Reykjavík | stq |
| Swedish | Reykjavík | sv |
| Swahili (macrolanguage) | Reykjavík | sw |
| szl | Reykjavík | szl |
| Tamil | ரெய்க்யவிக் | ta |
| Telugu | రేకవిక్ | te |
| Tetum | Reikiavike | tet |
| Tajik | Рейкявик | tg |
| tg-cyrl | Рейкявик | tg-cyrl |
| Thai | เรคยาวิก | th |
| Turkmen | Reýkýawik | tk |
| Tagalog | Reykjavik | tl |
| tly | Reykyavik | tly |
| Tok Pisin | Reykjavik | tpi |
| Turkish | Reykjavík | tr |
| Tatar | Рейкьявик | tt |
| Twi | Reykjavík | tw |
| udm | Рейкьявик | udm |
| Uighur | رېيكياۋىك | ug |
| Ukrainian | Рейк'явік | uk |
| Urdu | ریکیاوک | ur |
| Uzbek | Reykyavik | uz |
| vec | Reykjavik | vec |
| vep | Reikjavik | vep |
| Vietnamese | Rây-ki-a-vích | vi |
| vls | Reykjavik | vls |
| Volapük | Reykjavík | vo |
| vro | Reykjavík | vro |
| Walloon | Rékiavik | wa |
| war | Reykjavík | war |
| Wolof | Reykjawik | wo |
| Wu Chinese | 雷克雅未克 | wuu |
| xmf | რეიკიავიკი | xmf |
| Yiddish | רעקיאוויק | yi |
| Yoruba | Reykjavík | yo |
| yue | 雷克雅未克 | yue |
| zea | Reykjavík | zea |
| Chinese | 雷克雅未克 | zh |
| zh-cn | 雷克雅未克 | zh-cn |
| zh-hans | 雷克雅未克 | zh-hans |
| zh-hant | 雷克雅未克 | zh-hant |
| zh-hk | 雷克雅未克 | zh-hk |
| zh-tw | 雷克雅維克 | zh-tw |