| Language | Name | Code |
|---|---|---|
| Aragonese | Piraeus | an |
| Arabic | بيرايوس | ar |
| Asturian | El Piréu | ast |
| Azerbaijani | Pirey | az |
| Bashkir | Пирей | ba |
| Belarusian | Пірэй | be |
| be-tarask | Пірэй | be-tarask |
| Bulgarian | Пирея | bg |
| Bengali | পিরেয়াস | bn |
| Catalan | El Pireu | ca |
| Chechen | Пирей | ce |
| Cebuano | Piraeus | ceb |
| Czech | Pireus | cs |
| Welsh | Piraeus | cy |
| Danish | Piræus | da |
| German | Piräás | de |
| de-ch | Piräus | de-ch |
| Modern Greek (1453-) | Πειραιάς | el |
| English | Piraeus | en |
| en-ca | Piraeus | en-ca |
| en-gb | Piraeus | en-gb |
| Esperanto | Pireo | eo |
| Spanish | El Pireo | es |
| Estonian | Pireus | et |
| Basque | Pireo | eu |
| Persian | پیره | fa |
| Finnish | Pireus | fi |
| French | Le Pirée | fr |
| Irish | Piréas | ga |
| Galician | O Pireo | gl |
| gsw | Piräus | gsw |
| Gujarati | પિરાઈસ | gu |
| Hebrew | פיראוס | he |
| Hindi | पिरेयुस | hi |
| Croatian | Pirej | hr |
| Hungarian | Pireusz | hu |
| Armenian | Պիրեյոս | hy |
| hyw | Փիրէա | hyw |
| Indonesian | Piraeus | id |
| Italian | Il Pireo | it |
| Japanese | ピレウス | ja |
| Javanese | Piraeus | jv |
| Georgian | პირეოსი | ka |
| Kazakh | Пирей | kk |
| Kannada | ಪಿರಾಯಸ್ | kn |
| Korean | 피레아스 | ko |
| Latin | Piraeus | la |
| Luxembourgish | Piräus | lb |
| Limburgan | Pireas | li |
| lmo | El Piree | lmo |
| Lithuanian | Pirėjas | lt |
| Latvian | Pireja | lv |
| mdf | Пирэй | mdf |
| Macedonian | Пиреј | mk |
| Mongolian | Пирей | mn |
| Marathi | पीरेअस | mr |
| Malay (macrolanguage) | Piraeus | ms |
| Maltese | Piraeus | mt |
| Norwegian Bokmål | Pireus | nb |
| Dutch | Piraeus | nl |
| Norwegian Nynorsk | Pireus | nn |
| Occitan (post 1500) | Lo Pirèu | oc |
| Ossetian | Пирей | os |
| Polish | Pireus | pl |
| pnt | Πειραιάς | pnt |
| Pushto | پیرایوس | ps |
| Portuguese | Pireu | pt |
| pt-br | Pireu | pt-br |
| Romanian | Pireu | ro |
| Russian | Пирей | ru |
| Scots | Piraeus | sco |
| sgs | Piriejos | sgs |
| sh | Pirej | sh |
| Sinhala | පයිරියස් | si |
| Slovak | Pireus | sk |
| Slovenian | Pirej | sl |
| Albanian | Pireu | sq |
| Serbian | Пиреј | sr |
| Swedish | Pireus | sv |
| szl | Pireus | szl |
| Tamil | பிரேயஸ் | ta |
| Telugu | పిర్యాయుస్ | te |
| Thai | ไพรีอัส | th |
| Turkish | Pire | tr |
| Ukrainian | Пірей | uk |
| Urdu | پیرایوس | ur |
| Uzbek | Pirey (Gretsiya) | uz |
| vec | Il Pireo | vec |
| vep | Pirei | vep |
| Vietnamese | Piraeus | vi |
| Volapük | Pireas | vo |
| war | Piraeus | war |
| Wu Chinese | 比雷埃夫斯 | wuu |
| yue | 比雷埃夫斯 | yue |
| Chinese | 比雷埃夫斯 | zh |
| zh-hans | 比雷埃夫斯 | zh-hans |
| zh-hant | 比雷埃夫斯 | zh-hant |