| Language | Name | Code |
|---|---|---|
| Abkhazian | Ҳельсинки | ab |
| ace | Hèlsinki | ace |
| ady | Хелсинки | ady |
| aeb-arab | هلسنكي | aeb-arab |
| Afrikaans | Helsinki | af |
| Amharic | ሄልሲንኪ | am |
| Aragonese | Helsinki | an |
| ang | Helsinki | ang |
| ann | Elisinki | ann |
| Arabic | هلسنكي | ar |
| Official Aramaic (700-300 BCE) | ܗܠܣܢܩܝ | arc |
| ary | هيلسينكي | ary |
| arz | هيلسينكى | arz |
| Asturian | Ḥélsinki | ast |
| atj | Helsinki | atj |
| Avaric | Хельсинки | av |
| avk | Helsinki | avk |
| awa | हेलसिंकी | awa |
| Aymara | Helsinki | ay |
| Azerbaijani | Helsinki | az |
| azb | هلسینکی | azb |
| Bashkir | Хельсинки | ba |
| ban | Helsinki | ban |
| Bavarian | Helsinki | bar |
| bcl | Helsinki | bcl |
| Belarusian | Хельсінкі | be |
| be-tarask | Хэльсынкі | be-tarask |
| bew | Hèlsingki | bew |
| Bulgarian | Хелзинки | bg |
| bho | हेलसिंकी | bho |
| Bislama | Helsinki | bi |
| Bambara | Helsinki | bm |
| Bengali | হেলসিঙ্কি | bn |
| Tibetan | ཧེལ་སིན་ཀི། | bo |
| Breton | Helsinki | br |
| Bosnian | Helsinki | bs |
| bxr | Хельсинки | bxr |
| Catalan | Hèlsinki | ca |
| cbk-zam | Helsinki | cbk-zam |
| cdo | Helsinki | cdo |
| Chechen | Хельсинки | ce |
| Cebuano | Helsinki | ceb |
| chr | ᎮᎵᏏᏂᎩ | chr |
| chy | Helsinki | chy |
| Central Kurdish | ھێلسینکی | ckb |
| Corsican | Helsinki | co |
| crh | Helsinki | crh |
| crh-latn | Helsinki | crh-latn |
| Czech | Helsinky | cs |
| csb | Helsinki | csb |
| Church Slavic | Хєлсинки | cu |
| Chuvash | Хельсинки | cv |
| Welsh | Helsinki | cy |
| Danish | Helsinki | da |
| dag | Helsinki | dag |
| German | Helsinki | de |
| de-ch | Helsinki | de-ch |
| diq | Helsinki | diq |
| dsb | Helsinki | dsb |
| Ewe | Helsinki | ee |
| Modern Greek (1453-) | Ελσίνκι | el |
| eml | Helsinki | eml |
| English | Helsinki | en |
| en-ca | Helsinki | en-ca |
| en-gb | Helsinki | en-gb |
| en-us | Helsinki | en-us |
| Esperanto | Helsinko | eo |
| Spanish | Helsinki | es |
| Estonian | Helsingi | et |
| Basque | Helsinki | eu |
| ext | Helsinki | ext |
| Persian | هلسینکی | fa |
| Fulah | Helsinki | ff |
| Finnish | Helsinki | fi |
| Fijian | Helsinki | fj |
| Faroese | Helsinki | fo |
| French | Helsinki | fr |
| frp | Hèlsinki | frp |
| frr | Helsinki | frr |
| Western Frisian | Helsinky | fy |
| Irish | Heilsincí | ga |
| gag | Helsinki | gag |
| gcr | Helsinki | gcr |
| Scottish Gaelic | Helsinki | gd |
| Galician | Helsinqui | gl |
| glk | Helsinki | glk |
| gom | Helsinki | gom |
| got | 𐌷𐌰𐌹𐌻𐍃𐌹𐌽𐌲𐌰𐍆𐌰𐌿𐍂𐌿𐍃 | got |
| gpe | Helsinki | gpe |
| gsw | Helsinki | gsw |
| Gujarati | હેલસિંકી | gu |
| guw | Helsinki | guw |
| Manx | Helsinki | gv |
| Hausa | Helsinki | ha |
| hak | Helsinki | hak |
| haw | Helsinki | haw |
| Hebrew | הלסינקי | he |
| Hindi | हेलसिंकी | hi |
| hif | Helsinki | hif |
| Croatian | Helsinki | hr |
| Upper Sorbian | Helsinki | hsb |
| Haitian | Èlzinki | ht |
| Hungarian | Helsinki | hu |
| Armenian | Հելսինկի | hy |
| hyw | Հելսինքի | hyw |
| Interlingua (International Auxiliary Language Association) | Helsinki | ia |
| Indonesian | Helsinki | id |
| Interlingue | Helsinki | ie |
| Igbo | Helsinki | ig |
| ilo | Helsinki | ilo |
| Ido | Helsinki | io |
| Icelandic | Helsinki | is |
| Italian | Helsinki | it |
| Inuktitut | ᕼᐃᐅᓪᓯᓂᑭ | iu |
| Japanese | ヘルシンキ | ja |
| jam | Elsingki | jam |
| Lojban | helsigfoc | jbo |
| Javanese | Helsinki | jv |
| Georgian | ჰელსინკი | ka |
| kaa | Xelsinki | kaa |
| kab | Helsinki | kab |
| Kongo | Helsinki | kg |
| Kikuyu | Helsinki | ki |
| Kazakh | Хельсинки | kk |
| kk-cyrl | Хельсинки | kk-cyrl |
| Kalaallisut | Helsinki | kl |
| Kannada | ಹೆಲ್ಸಿಂಕಿ | kn |
| Korean | 헬싱키 | ko |
| koi | Хельсинки | koi |
| Kurdish | Helsînkî | ku |
| Komi | Хельсинки | kv |
| Cornish | Helsinki | kw |
| Kirghiz | Хельсинки | ky |
| Latin | Helsingia | la |
| lad | Helsinki | lad |
| Luxembourgish | Helsinki | lb |
| lfn | Helsinki | lfn |
| Ganda | Helsinki | lg |
| Limburgan | Helsinki | li |
| lij | Helsinki | lij |
| lld | Helsinki | lld |
| lmo | Helsinki | lmo |
| Lingala | Helsinki | ln |
| lrc | هیلسینکی | lrc |
| Lithuanian | Helsinkis | lt |
| Latvian | Helsinki | lv |
| lzh | 赫爾辛基 | lzh |
| mad | Helsinki | mad |
| mai | हेलसिन्की | mai |
| map-bms | Helsinki | map-bms |
| mdf | Хельсинки | mdf |
| Malagasy | Helsinki | mg |
| mhr | Хельсинки | mhr |
| Maori | Helsinki | mi |
| min | Helsinki | min |
| Macedonian | Хелсинки | mk |
| Malayalam | ഹെൽസിങ്കി | ml |
| Mongolian | Хельсинки | mn |
| Marathi | हेलसिंकी | mr |
| mrj | Хельсинки | mrj |
| Malay (macrolanguage) | Helsinki | ms |
| Maltese | Ħelsinki | mt |
| mul | Helsinki | mul |
| mwl | Helsinki | mwl |
| Burmese | ဟယ်လ်ဆင်ကီမြို့ | my |
| myv | Хельсинки ош | myv |
| mzn | هلسینکی | mzn |
| Nauru | Helsinki | na |
| nah | Helsinqui | nah |
| nan | Helsinki | nan |
| Norwegian Bokmål | Helsingfors | nb |
| Low German | Helsinki | nds |
| nds-nl | Helsinki | nds-nl |
| Nepali (macrolanguage) | हेल्सिन्की | ne |
| Dutch | Helsinki | nl |
| Norwegian Nynorsk | Helsingfors | nn |
| nov | Helsinki | nov |
| Narom | Ĥelsinqùi | nrm |
| nso | Helsinki | nso |
| Navajo | Tótsʼózí Adahiilíní | nv |
| Chichewa | Helsinki | ny |
| Occitan (post 1500) | Helsinki | oc |
| Livvi | Helsinki | olo |
| Oromo | Helsinki | om |
| Oriya (macrolanguage) | ହେଲସିଙ୍କି | or |
| Ossetian | Хельсинки | os |
| Panjabi | ਹੈਲਸਿੰਕੀ | pa |
| pap | Helsinki | pap |
| pcd | Helsinki | pcd |
| pdc | Helsinki | pdc |
| Pali | हेलसिंकी | pi |
| pih | Helsinki | pih |
| Polish | Helsinki | pl |
| pms | Helsinki | pms |
| pnb | ہیلسنکی | pnb |
| Pushto | هیلسنکي | ps |
| Portuguese | Helsínquia | pt |
| pt-br | Helsinque | pt-br |
| Quechua | Helsinki | qu |
| Romansh | Helsinki | rm |
| rmf | Baro fooros | rmf |
| rmy | Helsinki | rmy |
| Rundi | Helsinki | rn |
| Romanian | Helsinki | ro |
| Russian | Хельсинки | ru |
| rue | Гелсінкы | rue |
| rup | Helsinki | rup |
| Kinyarwanda | Helsinki | rw |
| Sanskrit | हेल्सिन्की | sa |
| sah | Хельсинки | sah |
| Sardinian | Helsinki | sc |
| Sicilian | Helsinki | scn |
| Scots | Helsinki | sco |
| Sindhi | هلسنڪي | sd |
| Northern Sami | Helsset | se |
| Sango | Helsinki | sg |
| sgs | Helsėnkis | sgs |
| sh | Helsinki | sh |
| Sinhala | හෙල්සින්කි | si |
| Slovak | Helsinki | sk |
| Slovenian | Helsinki | sl |
| smn | Helsig | smn |
| sms | Heʹlssen | sms |
| Shona | Helsinki | sn |
| Somali | Helsinki | so |
| Albanian | Helsinki | sq |
| Serbian | Хелсинки | sr |
| srn | Helsinki | srn |
| Southern Sotho | Helsinki | st |
| stq | Helsinki | stq |
| Sundanese | Hélsinki | su |
| Swedish | Helsingfors | sv |
| Swahili (macrolanguage) | Helsinki | sw |
| szl | Helsinki | szl |
| Tamil | ஹெல்சின்கி | ta |
| tcy | ಹೆಲ್ಸಿಂಕಿ | tcy |
| Telugu | హెల్సింకీ | te |
| Tetum | Helsinki | tet |
| Tajik | Ҳелсинкӣ | tg |
| tg-cyrl | Ҳелсинкӣ | tg-cyrl |
| Thai | เฮลซิงกิ | th |
| Turkmen | Helsinki | tk |
| Tagalog | Lungsod ng Helsinki | tl |
| tly | Helsinki | tly |
| Tonga (Tonga Islands) | Helesingikī | to |
| tok | ma tomo Lesinki | tok |
| Turkish | Helsinki | tr |
| Tatar | Һелсинки | tt |
| tum | Helsinki | tum |
| Twi | Helsinki | tw |
| udm | Хельсинки | udm |
| Uighur | Xélsinki | ug |
| Ukrainian | Гельсінкі | uk |
| Urdu | ہلسنکی | ur |
| Uzbek | Helsinki | uz |
| vec | Helsinki | vec |
| vep | Hel'sinki | vep |
| Vietnamese | Helsinki | vi |
| vls | Helsinki | vls |
| Volapük | Helsinki | vo |
| vro | Helsingi | vro |
| Walloon | Helsinki | wa |
| war | Helsinki | war |
| Wolof | Elsinki | wo |
| Wu Chinese | 赫尔辛基 | wuu |
| Xhosa | I-Helsinki | xh |
| xmf | ჰელსინკი | xmf |
| Yiddish | העלסינקי | yi |
| Yoruba | Helsinki | yo |
| yue | 赫爾辛基 | yue |
| Zhuang | Helsinki | za |
| zea | Helsinki | zea |
| Chinese | 赫尔辛基 | zh |
| zh-cn | 赫尔辛基 | zh-cn |
| zh-hans | 赫尔辛基 | zh-hans |
| zh-hant | 赫爾辛基 | zh-hant |
| zh-hk | 赫爾辛基 | zh-hk |
| zh-mo | 赫爾辛基 | zh-mo |
| zh-my | 赫尔辛基 | zh-my |
| zh-sg | 赫尔辛基 | zh-sg |
| zh-tw | 赫爾辛基 | zh-tw |
| Zulu | Helsinki | zu |