| Language | Name | Code |
|---|---|---|
| Afrikaans | Cardiff | af |
| Amharic | ካርዲፍ | am |
| Aragonese | Cardiff | an |
| ang | Cardiff | ang |
| Arabic | كارديف | ar |
| ary | كارديف | ary |
| arz | كارديف | arz |
| Asturian | Cárdif | ast |
| Azerbaijani | Kardiff | az |
| azb | کاردیف | azb |
| ban | Cardiff | ban |
| Bavarian | Cardiff | bar |
| Belarusian | Кардыф | be |
| be-tarask | Кардыф | be-tarask |
| bew | Kardip | bew |
| Bulgarian | Кардиф | bg |
| bho | कार्डिफ | bho |
| Bengali | কার্ডিফ | bn |
| Breton | Kerdiz | br |
| Bosnian | Cardiff | bs |
| Catalan | Cardiff | ca |
| Cebuano | Cardiff (kapital sa apil sa nasod) | ceb |
| Central Kurdish | کاردیف | ckb |
| Czech | Cardiff | cs |
| Welsh | Caerdydd | cy |
| Danish | Cardiff | da |
| German | Cardiff | de |
| diq | Cardiff | diq |
| dsb | Cardiff | dsb |
| Modern Greek (1453-) | Κάρντιφ | el |
| English | Cardiff | en |
| en-ca | Cardiff | en-ca |
| en-gb | Cardiff | en-gb |
| Esperanto | Cardiff | eo |
| Spanish | Cardiff | es |
| Estonian | Cardiff | et |
| Basque | Cardiff | eu |
| ext | Cardiff | ext |
| Persian | کاردیف | fa |
| Finnish | Cardiff | fi |
| Faroese | Cardiff | fo |
| French | Cardiff | fr |
| frr | Cardiff | frr |
| Western Frisian | Cardiff | fy |
| Irish | Caerdydd | ga |
| Scottish Gaelic | Caerdydd | gd |
| Galician | Cardiff | gl |
| Gujarati | કાર્ડિફ | gu |
| Manx | Cayr Deeth | gv |
| Hebrew | קארדיף | he |
| Hindi | कार्डिफ़ | hi |
| Croatian | Cardiff | hr |
| Upper Sorbian | Cardiff | hsb |
| Haitian | Kadif | ht |
| Hungarian | Cardiff | hu |
| Armenian | Քարդիֆ | hy |
| Indonesian | Cardiff | id |
| Interlingue | Cardiff | ie |
| Ido | Cardiff | io |
| Icelandic | Cardiff | is |
| Italian | Cardiff | it |
| Japanese | カーディフ | ja |
| Javanese | Cardiff | jv |
| Georgian | კარდიფი | ka |
| kab | Cardiff | kab |
| kge | Cardiff | kge |
| Kazakh | Кардифф | kk |
| kk-cyrl | Кардифф | kk-cyrl |
| Kannada | ಕಾರ್ಡಿಫ್ | kn |
| Korean | 카디프 | ko |
| Kurdish | Cardiff | ku |
| Cornish | Kardydh | kw |
| Kirghiz | Кардифф | ky |
| Latin | Cardiffa | la |
| lij | Cardiff | lij |
| lmo | Cardiff | lmo |
| Lithuanian | Kardifas | lt |
| Latvian | Kārdifa | lv |
| Macedonian | Кардиф | mk |
| Malayalam | കാർഡിഫ് | ml |
| Mongolian | Кардифф | mn |
| mni | ꯀꯥꯔꯗꯤꯐ | mni |
| Marathi | कार्डिफ | mr |
| Malay (macrolanguage) | Cardiff | ms |
| Burmese | ကားဒစ်မြို့ | my |
| mzn | کاردیف | mzn |
| Nauru | Cardiff | na |
| nah | Cardiff | nah |
| nan | Cardiff | nan |
| Norwegian Bokmål | Cardiff | nb |
| Low German | Cardiff | nds |
| Dutch | Cardiff | nl |
| Norwegian Nynorsk | Cardiff | nn |
| Occitan (post 1500) | Cardiff | oc |
| Livvi | Caerdydd | olo |
| Ossetian | Кардифф | os |
| Panjabi | ਕਾਰਡਿਫ਼ | pa |
| Polish | Cardiff | pl |
| pms | Cardiff | pms |
| pnb | کارڈف | pnb |
| Portuguese | Cardiff | pt |
| pt-br | Cardiff | pt-br |
| Quechua | Cardiff | qu |
| rmy | Cardiff | rmy |
| Romanian | Cardiff | ro |
| Russian | Кардифф | ru |
| rup | Cardiff | rup |
| Sicilian | Cardiff | scn |
| Scots | Cairdiff | sco |
| Northern Sami | Caerdydd | se |
| sh | Cardiff | sh |
| Sinhala | කාඩිෆ් | si |
| Slovak | Cardiff | sk |
| Slovenian | Cardiff | sl |
| Shona | Cardiff | sn |
| Albanian | Kardif | sq |
| Serbian | Кардиф | sr |
| Swedish | Cardiff | sv |
| Swahili (macrolanguage) | Cardiff | sw |
| szl | Cardiff | szl |
| Tamil | கார்டிஃப் | ta |
| Telugu | కార్డిఫ్ | te |
| tg-cyrl | Кордиф | tg-cyrl |
| Thai | คาร์ดิฟฟ์ | th |
| Turkmen | Kardiff | tk |
| Tagalog | Cardiff | tl |
| tly | Kardiff | tly |
| tok | ma tomo Kasi | tok |
| Turkish | Cardiff | tr |
| Tatar | Кардифф | tt |
| tum | Cardiff | tum |
| Twi | Cardiff | tw |
| udm | Кардифф | udm |
| Ukrainian | Кардіфф | uk |
| Urdu | کارڈف | ur |
| Uzbek | Kardiff | uz |
| vec | Cardiff | vec |
| Vietnamese | Cardiff | vi |
| vls | Cardiff | vls |
| vro | Caerdydd | vro |
| war | Cardiff | war |
| Wu Chinese | 卡迪夫 | wuu |
| Yiddish | קארדיף | yi |
| yue | 卡迪夫 | yue |
| zea | Cardiff | zea |
| Chinese | 加迪夫 | zh |
| zh-hans | 加地夫 | zh-hans |
| zh-hant | 卡地夫 | zh-hant |
| zh-hk | 卡迪夫 | zh-hk |
| zh-tw | 卡地夫 | zh-tw |