| Language | Name | Code |
|---|---|---|
| Amharic | ቢልባው | am |
| Aragonese | Bilbau | an |
| Arabic | بلباو | ar |
| arz | بلباو | arz |
| Asturian | Bilbao | ast |
| Aymara | Bilbao | ay |
| Azerbaijani | Bilbao | az |
| azb | بیلبائو | azb |
| Bashkir | Бильбао | ba |
| Belarusian | Більбаа | be |
| be-tarask | Більбао | be-tarask |
| Bulgarian | Билбао | bg |
| Bengali | বিলবাও | bn |
| Breton | Bilbo | br |
| Bosnian | Bilbao | bs |
| Catalan | Bilbao | ca |
| Chechen | Билбао | ce |
| Cebuano | Bilbawu | ceb |
| chy | Bilbao | chy |
| Central Kurdish | بیلباو | ckb |
| cps | Bilbawu | cps |
| Czech | Bilbao | cs |
| Chuvash | Бильбао | cv |
| Welsh | Bilbo | cy |
| Danish | Bilbao | da |
| German | Bilbao | de |
| Modern Greek (1453-) | Μπιλμπάο | el |
| English | Bilbao | en |
| en-ca | Bilbao | en-ca |
| en-gb | Bilbao | en-gb |
| Esperanto | Bilbao | eo |
| Spanish | Bilbao | es |
| Estonian | Bilbao | et |
| Basque | Bilbo | eu |
| ext | Bilbau | ext |
| Persian | بیلبائو | fa |
| Finnish | Bilbao | fi |
| French | Bilbao | fr |
| frr | Bilbao | frr |
| Irish | Bilbo | ga |
| Scottish Gaelic | Bilbao | gd |
| Galician | Bilbao | gl |
| Gujarati | બિલ્બાઓ | gu |
| Hausa | Bilbao | ha |
| Hebrew | בילבאו | he |
| Hindi | बिल्बाओ | hi |
| hil | Bilbawu | hil |
| Croatian | Bilbao | hr |
| Haitian | Bilbao | ht |
| Hungarian | Bilbao | hu |
| Armenian | Բիլբաո | hy |
| Interlingua (International Auxiliary Language Association) | Bilbao | ia |
| Indonesian | Bilbao | id |
| Interlingue | Bilbao | ie |
| Ido | Bilbao | io |
| Icelandic | Bilbao | is |
| Italian | Bilbao | it |
| Japanese | ビルバオ | ja |
| Javanese | Bilbao | jv |
| Georgian | ბილბაო | ka |
| kaa | Bilbao | kaa |
| Kazakh | Бильбао | kk |
| Kannada | ಬಿಲ್ಬಾವ್ | kn |
| Korean | 빌바오 | ko |
| krj | Bilbawu | krj |
| Cornish | Bilbao | kw |
| Kirghiz | Бильбро шаары | ky |
| Latin | Bilbaum | la |
| lad | Bilbao | lad |
| Luxembourgish | Bilbao | lb |
| Limburgan | Bilbao | li |
| lld | Bilbao | lld |
| lmo | Bilbao | lmo |
| Lingala | Bilbao | ln |
| Lithuanian | Bilbao | lt |
| Latvian | Bilbao | lv |
| mdf | Бильбао | mdf |
| Malagasy | Bilbao | mg |
| mhr | Бильбао | mhr |
| Macedonian | Билбао | mk |
| Mongolian | Бильбао | mn |
| Marathi | बिल्बाओ | mr |
| Malay (macrolanguage) | Bilbao | ms |
| Maltese | Bilbao | mt |
| nah | Bilbao | nah |
| Norwegian Bokmål | Bilbao | nb |
| Dutch | Bilbao | nl |
| Norwegian Nynorsk | Bilbao | nn |
| Occitan (post 1500) | Bilbao | oc |
| Livvi | Bilbo | olo |
| Ossetian | Бильбао | os |
| Pampanga | Bilbáu | pam |
| Polish | Bilbao | pl |
| pms | Bilbo / Bilbao | pms |
| Portuguese | Bilbau | pt |
| Quechua | Bilbao | qu |
| Romanian | Bilbao | ro |
| Russian | Бильбао | ru |
| rup | Bilbao | rup |
| Sanskrit | बिल्बाओ | sa |
| Sardinian | Bilbao | sc |
| Sicilian | Bilbao | scn |
| Scots | Bilbao | sco |
| sh | Bilbao | sh |
| Sinhala | බිල්බාවෝ | si |
| Slovak | Bilbao | sk |
| Slovenian | Bilbao | sl |
| Albanian | Bilbao | sq |
| Serbian | Билбао | sr |
| Swedish | Bilbao | sv |
| Swahili (macrolanguage) | Bilbao | sw |
| szl | Bilbao | szl |
| Tamil | பில்போ | ta |
| Telugu | బిల్బావో | te |
| Tajik | Билбао | tg |
| Thai | บิลบาโอ | th |
| Tagalog | Bilbao | tl |
| Turkish | Bilbao | tr |
| Tatar | Билбао | tt |
| Twi | Bilbao | tw |
| Uighur | Bilbaw | ug |
| Ukrainian | Більбао | uk |
| Urdu | بلباو | ur |
| Uzbek | Bilbao | uz |
| vec | Bilbao | vec |
| vep | Bil'bao | vep |
| Vietnamese | Bilbao | vi |
| Volapük | Bilbao | vo |
| war | Bilbawu | war |
| Wu Chinese | 毕尔巴鄂 | wuu |
| xmf | ბილბაო | xmf |
| Yiddish | בילבאַאָ | yi |
| yue | 畢爾包 | yue |
| Chinese | 毕尔巴鄂 | zh |
| zh-hans | 毕尔巴鄂 | zh-hans |
| zh-hant | 畢爾巴鄂 | zh-hant |
| zh-tw | 畢爾包 | zh-tw |