| Language | Name | Code |
|---|---|---|
| Afrikaans | Heerlen | af |
| Arabic | هيرلين | ar |
| Asturian | Heerlen | ast |
| Azerbaijani | Herlen | az |
| Belarusian | Херлен | be |
| Bulgarian | Хеерлен | bg |
| Bengali | হেরলেন | bn |
| Breton | Heerlen | br |
| Catalan | Heerlen | ca |
| Cebuano | Gemeente Heerlen | ceb |
| Czech | Heerlen | cs |
| Welsh | Heerlen | cy |
| Danish | Heerlen | da |
| German | Heerlen | de |
| Modern Greek (1453-) | Χέερλεν | el |
| English | Heerlen | en |
| en-ca | Heerlen | en-ca |
| en-gb | Heerlen | en-gb |
| Esperanto | Heerlen | eo |
| Spanish | Heerlen | es |
| Basque | Heerlen | eu |
| Persian | هیرلن | fa |
| Finnish | Heerlen | fi |
| French | Heerlen | fr |
| Western Frisian | Heerlen | fy |
| Irish | Heerlen | ga |
| Gujarati | હીર્લેન | gu |
| Hebrew | הירלן | he |
| Hungarian | Heerlen | hu |
| Armenian | Հեյրլեն | hy |
| Indonesian | Heerlen | id |
| Italian | Heerlen | it |
| Japanese | ヘールレン | ja |
| Javanese | Heerlen | jv |
| Kannada | ಹೀರ್ಲೆನ್ | kn |
| Korean | 헤이를런 | ko |
| Kurdish | Heerlen | ku |
| Latin | Coriovallum | la |
| Luxembourgish | Heerlen | lb |
| Limburgan | Heële | li |
| Lithuanian | Hirlenas | lt |
| Latvian | Hērlena | lv |
| Macedonian | Херлен | mk |
| Marathi | हेरलेन | mr |
| Malay (macrolanguage) | Heerlen | ms |
| nan | Heerlen | nan |
| Norwegian Bokmål | Heerlen | nb |
| nds-nl | Heerlen | nds-nl |
| Dutch | Heerlen | nl |
| Norwegian Nynorsk | Heerlen | nn |
| Occitan (post 1500) | Heerlen | oc |
| Polish | Heerlen | pl |
| Portuguese | Heerlen | pt |
| pt-br | Heerlen | pt-br |
| Romanian | Heerlen | ro |
| Russian | Херлен | ru |
| Scots | Heerlen | sco |
| sh | Heerlen | sh |
| Sinhala | හිර්ලෙන් | si |
| Slovenian | Heerlen | sl |
| Albanian | Heerlen | sq |
| Serbian | Херлен | sr |
| stq | Heerlen | stq |
| Swedish | Heerlen | sv |
| Swahili (macrolanguage) | Heerlen | sw |
| szl | Heerlen | szl |
| Tamil | ஹீர்லேன் | ta |
| Telugu | హీర్లేన్ | te |
| Thai | เฮร์เลิน | th |
| Turkish | Heerlen | tr |
| Ukrainian | Герлен | uk |
| Urdu | ہیرلین | ur |
| vec | Heerlen | vec |
| Vietnamese | Heerlen | vi |
| Volapük | Heerlen | vo |
| war | Heerlen | war |
| zea | Heerlen | zea |
| Chinese | 海尔伦 | zh |
| zh-hans | 海尔伦 | zh-hans |
| zh-hant | 海爾倫 | zh-hant |