| Language | Name | Code |
|---|---|---|
| Afrikaans | Lahti | af |
| Aragonese | Lahti | an |
| Arabic | لاهتي | ar |
| arz | لاهتى | arz |
| Asturian | Lahti | ast |
| Azerbaijani | Lahti | az |
| Bashkir | Лахти | ba |
| Belarusian | Лахты | be |
| be-tarask | Лахці | be-tarask |
| Bulgarian | Лахти | bg |
| Bengali | লাহতি | bn |
| Bosnian | Lahti | bs |
| Catalan | Lahti | ca |
| Chechen | Лахти | ce |
| Cebuano | Lahti | ceb |
| Czech | Lahti | cs |
| Welsh | Lahti | cy |
| Danish | Lahti | da |
| German | Lahti | de |
| Modern Greek (1453-) | Λάχτι | el |
| English | Lahti | en |
| Esperanto | Lahti | eo |
| Spanish | Lahti | es |
| Estonian | Lahti | et |
| Basque | Lahti | eu |
| Persian | لاختی | fa |
| Finnish | Lahti | fi |
| French | Lahti | fr |
| frr | Lahti | frr |
| Irish | Lahti | ga |
| Galician | Lahti | gl |
| Gujarati | લાટી | gu |
| Hebrew | לאהטי | he |
| Hindi | लाह्ति | hi |
| Croatian | Lahti | hr |
| Hungarian | Lahti | hu |
| Armenian | Լահթի | hy |
| Indonesian | Lahti | id |
| Interlingue | Lahti | ie |
| Ido | Lahti | io |
| Icelandic | Lahti | is |
| Italian | Lahti | it |
| Japanese | ラハティ | ja |
| Kalaallisut | Lahti | kl |
| Kannada | ಲಾಹ್ಟಿ | kn |
| Korean | 라흐티 | ko |
| koi | Лахти | koi |
| Cornish | Lahti | kw |
| Latin | Lahti | la |
| lmo | Lahti | lmo |
| Lithuanian | Lahtis | lt |
| Latvian | Lahti | lv |
| mdf | Лагти | mdf |
| mhr | Лахти | mhr |
| Maori | Lahti | mi |
| Macedonian | Лахти | mk |
| Marathi | लाटी | mr |
| mrj | Лахти | mrj |
| Malay (macrolanguage) | Lahti | ms |
| Maltese | Lahti | mt |
| mul | Lahti | mul |
| myv | Лахти | myv |
| Norwegian Bokmål | Lahtis | nb |
| Low German | Lahti | nds |
| Dutch | Lahti | nl |
| Norwegian Nynorsk | Lahtis | nn |
| Occitan (post 1500) | Lahti | oc |
| Ossetian | Лахти | os |
| Polish | Lahti | pl |
| pnb | لاہتی | pnb |
| Portuguese | Lahti | pt |
| Quechua | Lahti | qu |
| Romanian | Lahti | ro |
| Russian | Лахти | ru |
| Northern Sami | Lahti | se |
| sh | Lahti | sh |
| Sinhala | ලහ්ටි | si |
| Slovak | Lahti | sk |
| Slovenian | Lahti | sl |
| smn | Lahti | smn |
| sms | Lahti | sms |
| Albanian | Lahti | sq |
| Serbian | Лахти | sr |
| Swedish | Lahtis | sv |
| szl | Lahti | szl |
| Tamil | லாடி | ta |
| Telugu | లాహ్తి | te |
| Thai | ลาห์ตี | th |
| Turkish | Lahti | tr |
| Tatar | Лаһти | tt |
| tum | Lahti | tum |
| udm | Лахти | udm |
| Ukrainian | Лагті | uk |
| Urdu | لاہتی | ur |
| Uzbek | Laxti | uz |
| vec | Lahti | vec |
| vep | Laht | vep |
| Vietnamese | Lahti | vi |
| Volapük | Lahti | vo |
| war | Lahti | war |
| Wu Chinese | 拉赫蒂 | wuu |
| Chinese | 拉赫蒂 | zh |
| zh-hant | 拉赫蒂 | zh-hant |