| Language | Name | Code |
|---|---|---|
| Afrikaans | Aken | af |
| Amharic | አኽን | am |
| Aragonese | Aachen | an |
| Arabic | آخن | ar |
| arz | اخين | arz |
| Asturian | Aquisgrán | ast |
| avk | Aachen | avk |
| Azerbaijani | Aaxen | az |
| azb | آخن | azb |
| ban | Aachen | ban |
| Bavarian | Aachen | bar |
| Belarusian | Ахен | be |
| be-tarask | Аахэн | be-tarask |
| Bulgarian | Аахен | bg |
| Bengali | আখেন | bn |
| Breton | Aachen | br |
| Bosnian | Aachen | bs |
| Catalan | Aquisgrà | ca |
| Chechen | Ахен | ce |
| Cebuano | Aachen | ceb |
| Central Kurdish | ئاخن | ckb |
| Corsican | Aquisgrana | co |
| Czech | Cáchy | cs |
| csb | Achen | csb |
| Welsh | Aachen | cy |
| Danish | Aachen | da |
| German | Aachen | de |
| de-at | Aachen | de-at |
| de-ch | Aachen | de-ch |
| diq | Aachen | diq |
| Modern Greek (1453-) | Άαχεν | el |
| English | Aachen | en |
| en-ca | Aachen | en-ca |
| en-gb | Aachen | en-gb |
| Esperanto | Aachen | eo |
| Spanish | Aquisgrán | es |
| Estonian | Aachen | et |
| Basque | Akisgran | eu |
| Persian | آخن | fa |
| Finnish | Aachen | fi |
| French | Aix-la-Chapelle | fr |
| frp | Aachen | frp |
| frr | Aachen | frr |
| fur | Aachen | fur |
| Western Frisian | Aken | fy |
| Irish | Aachen | ga |
| Scottish Gaelic | Aachen | gd |
| Galician | Aquisgrán | gl |
| gsw | Aachen | gsw |
| Gujarati | આકેન | gu |
| Hebrew | אאכן | he |
| Hindi | आखन | hi |
| Croatian | Aachen | hr |
| Upper Sorbian | Aachen | hsb |
| Hungarian | Aachen | hu |
| Armenian | Աախեն | hy |
| Interlingua (International Auxiliary Language Association) | Aquisgrano | ia |
| Indonesian | Aachen | id |
| Interlingue | Aachen | ie |
| Ido | Aachen | io |
| Icelandic | Aachen | is |
| Italian | Aquisgrana | it |
| Japanese | アーヘン | ja |
| Georgian | აახენი | ka |
| Kongo | Aachen | kg |
| Kazakh | Ахен | kk |
| Kannada | ಆಚೆನ್ | kn |
| Korean | 아헨 | ko |
| ksh | Oche | ksh |
| Kurdish | Aachen | ku |
| Kirghiz | Ахен | ky |
| Latin | Aquisgranum | la |
| Luxembourgish | Oochen | lb |
| Limburgan | Aoke | li |
| lij | Aachen | lij |
| lld | Aachen | lld |
| lmo | Aquisgrana | lmo |
| Lithuanian | Achenas | lt |
| Latvian | Āhene | lv |
| mdf | Аахэн | mdf |
| Malagasy | Aachen | mg |
| min | Aachen | min |
| Macedonian | Ахен | mk |
| Malayalam | ആക്കൻ | ml |
| Mongolian | Ахен | mn |
| Marathi | आखन | mr |
| Malay (macrolanguage) | Aachen | ms |
| Maltese | Aachen | mt |
| mul | Aachen | mul |
| nan | Aachen | nan |
| nap | Aachen | nap |
| Norwegian Bokmål | Aachen | nb |
| Low German | Aken | nds |
| nds-nl | Aachen | nds-nl |
| Dutch | Aken | nl |
| Norwegian Nynorsk | Aachen | nn |
| Narom | Aachen | nrm |
| Occitan (post 1500) | Aquisgran | oc |
| Ossetian | Ахен | os |
| pcd | Aachen | pcd |
| Polish | Akwizgran | pl |
| pms | Aachen | pms |
| pnb | آخن | pnb |
| Pushto | آخن | ps |
| Portuguese | Aachen | pt |
| pt-br | Aachen | pt-br |
| Quechua | Aachen | qu |
| Romansh | Aachen | rm |
| Romanian | Aachen | ro |
| Russian | Ахен | ru |
| rup | Aachen | rup |
| Sardinian | Aachen | sc |
| Sicilian | Aquisgrana | scn |
| Scots | Aachen | sco |
| sh | Aachen | sh |
| Sinhala | ආචෙන් | si |
| Slovak | Aachen | sk |
| Slovenian | Aachen | sl |
| Serbian | Ахен | sr |
| sr-el | Aachen | sr-el |
| stq | Aachen | stq |
| Swedish | Aachen | sv |
| Swahili (macrolanguage) | Aachen | sw |
| szl | Aachen | szl |
| Tamil | ஆஃகன் | ta |
| Telugu | ఆకెన్ | te |
| Tajik | Аахен | tg |
| Thai | อาเคิน | th |
| Tagalog | Aachen | tl |
| tly | Aaxen | tly |
| Turkish | Aachen | tr |
| Tatar | Ахен | tt |
| tum | Aachen | tum |
| Ukrainian | Аахен | uk |
| Urdu | آچن | ur |
| Uzbek | Aachen | uz |
| vec | Aachen | vec |
| Vietnamese | Aachen | vi |
| vls | Aachen | vls |
| Volapük | Aachen | vo |
| Walloon | Åxhe | wa |
| war | Aachen | war |
| Wolof | Aachen | wo |
| Wu Chinese | 亚琛 | wuu |
| yue | 阿臣 | yue |
| zea | Aken | zea |
| Chinese | 亚琛 | zh |
| zh-cn | 亚琛 | zh-cn |
| zh-hans | 亚琛 | zh-hans |
| zh-hant | 阿亨 | zh-hant |
| zh-hk | 阿亨 | zh-hk |
| zh-mo | 阿亨 | zh-mo |
| zh-my | 亚琛 | zh-my |
| zh-sg | 亚琛 | zh-sg |
| zh-tw | 阿亨 | zh-tw |
| Zulu | Aachen | zu |