| Language | Name | Code |
|---|---|---|
| Arabic | كيفلافيك | ar |
| arz | كيفلافيك | arz |
| Asturian | Keflavík | ast |
| Azerbaijani | Keflavik | az |
| Belarusian | Кеблавік | be |
| be-tarask | Кефлявік | be-tarask |
| Bulgarian | Кеплавик | bg |
| Catalan | Keflavík | ca |
| Cebuano | Keflavík | ceb |
| Czech | Keflavík | cs |
| Welsh | Keflavík | cy |
| Danish | Keflavík | da |
| German | Keflavík | de |
| Modern Greek (1453-) | Κεφλαβίκ | el |
| English | Keflavík | en |
| Esperanto | Keflavík | eo |
| Spanish | Keflavík | es |
| Estonian | Keflavík | et |
| Basque | Keflavík | eu |
| Persian | کپلاویک | fa |
| Finnish | Keflavík | fi |
| Faroese | Keflavík | fo |
| French | Keflavík | fr |
| Western Frisian | Keflavik | fy |
| Irish | Keflavík | ga |
| Galician | Keflavík | gl |
| Hebrew | קפלאוויק | he |
| Hindi | केफ्लाविक | hi |
| Croatian | Keflavík | hr |
| Hungarian | Keflavík | hu |
| Armenian | Կեֆլավիկ | hy |
| Indonesian | Keflavík | id |
| Interlingue | Keflavík | ie |
| Icelandic | Keflavík | is |
| Italian | Keflavík | it |
| Japanese | ケプラヴィーク | ja |
| Georgian | კებლავიკი | ka |
| Kalaallisut | Keflavík | kl |
| Korean | 케플라비크 | ko |
| Latin | Keflavík | la |
| Lithuanian | Keblavikas | lt |
| Latvian | Ķeblavika | lv |
| mdf | Кэплавик | mdf |
| Macedonian | Кеплавик | mk |
| Norwegian Bokmål | Keflavík | nb |
| nds-nl | Keflavík | nds-nl |
| Dutch | Keflavík | nl |
| Norwegian Nynorsk | Keflavík | nn |
| Ossetian | Кеблавик | os |
| Polish | Keflavík | pl |
| Portuguese | Keflavík | pt |
| Russian | Кеблавик | ru |
| Sicilian | Keflavík | scn |
| Scots | Keflavík | sco |
| Northern Sami | Keflavík | se |
| sh | Keflavík | sh |
| Slovak | Keflavík | sk |
| Slovenian | Keflavík | sl |
| Albanian | Keflavík | sq |
| Serbian | Кеблавик | sr |
| sr-ec | Кеблавик | sr-ec |
| sr-el | Keblavik | sr-el |
| Swedish | Keflavik | sv |
| Turkish | Keflavík | tr |
| Ukrainian | Кеплавік | uk |
| Urdu | کیپلاویک | ur |
| vep | Keblavik | vep |
| Vietnamese | Keflavík | vi |
| Volapük | Keflavík | vo |
| Wu Chinese | 凯夫拉维克 | wuu |
| xmf | კებლავიკი | xmf |
| Chinese | 凯夫拉维克 | zh |
| zh-cn | 凯夫拉维克 | zh-cn |
| zh-hans | 凯夫拉维克 | zh-hans |
| zh-hant | 凱夫拉維克 | zh-hant |
| zh-hk | 凱夫拉維克 | zh-hk |
| zh-sg | 凯夫拉维克 | zh-sg |
| zh-tw | 凱夫拉維克 | zh-tw |