| Language | Name | Code |
|---|---|---|
| Afrikaans | Thessaloniki | af |
| Aragonese | Tesalonica | an |
| Arabic | سالونيك | ar |
| ary | طيسالونيك | ary |
| arz | سلانيك | arz |
| Asturian | Tesalónica | ast |
| Azerbaijani | Saloniki | az |
| Bashkir | Салоники | ba |
| ban | Thessaloniki | ban |
| bbc | Tessalonik | bbc |
| Belarusian | Салонікі | be |
| be-tarask | Тэсалёнікі | be-tarask |
| Bulgarian | Солун | bg |
| Bengali | থেসালোনিকি | bn |
| Breton | Thessaloniki | br |
| Bosnian | Solun | bs |
| Catalan | Tessalònica | ca |
| cdo | Táik-sák-lò̤-nà̤-giă | cdo |
| Chechen | Салоники | ce |
| Cebuano | Dimos Thessaloniki | ceb |
| Central Kurdish | سەلانیک | ckb |
| crh | Selânik | crh |
| crh-latn | Selânik | crh-latn |
| Czech | Soluň | cs |
| Church Slavic | Ѳєссалонїка | cu |
| Chuvash | Салоники | cv |
| Welsh | Thessaloníci | cy |
| Danish | Thessaloniki | da |
| German | Thessaloniki | de |
| diq | Selanik | diq |
| Modern Greek (1453-) | Θεσσαλονίκη | el |
| eml | Salunech | eml |
| English | Thessaloniki | en |
| Esperanto | Tesaloniko | eo |
| Spanish | Salónica | es |
| Estonian | Thessaloníki | et |
| Basque | Tesalonika | eu |
| Persian | سالونیک | fa |
| Finnish | Thessaloniki | fi |
| Faroese | Thessaloniki | fo |
| French | Thessalonique | fr |
| frp | Salonica | frp |
| frr | Thessaloniki | frr |
| Western Frisian | Tessaloniki | fy |
| Irish | Teasaloinicé | ga |
| Scottish Gaelic | Thessaloniki | gd |
| Galician | Tesalónica | gl |
| got | 𐌸𐌰𐌹𐍃𐍃𐌰𐌻𐌰𐌿𐌽𐌴𐌹𐌺𐌰 | got |
| gsw | Thessaloniki | gsw |
| Gujarati | થેસાલોનિકી | gu |
| hak | Thiap-sat-lò-nì-kâ | hak |
| Hebrew | סלוניקי | he |
| Hindi | थेसालोनिकी | hi |
| Croatian | Solun | hr |
| Upper Sorbian | Sołun | hsb |
| Hungarian | Szaloniki | hu |
| Armenian | Սալոնիկ | hy |
| hyw | Թեսաղոնիկէ | hyw |
| Indonesian | Thessaloniki | id |
| Interlingue | Thessaloniki | ie |
| Ido | Thesaloniki | io |
| Icelandic | Þessaloníka | is |
| Italian | Salonicco | it |
| Japanese | テッサロニキ | ja |
| Javanese | Thesaloniki | jv |
| Georgian | სალონიკი | ka |
| Kazakh | Салоники | kk |
| Kannada | ಥೆಸ್ಸಲೋನಿಕಿ | kn |
| Korean | 테살로니키 | ko |
| Kurdish | Selanîk | ku |
| Kirghiz | Салоники | ky |
| Latin | Thessalonica | la |
| lad | Selanik | lad |
| Luxembourgish | Thessaloniki | lb |
| Limburgan | Thessaloniki | li |
| lmo | Salunich | lmo |
| Lithuanian | Salonikai | lt |
| Latvian | Saloniki | lv |
| mdf | Тэсалоники | mdf |
| Malagasy | Tesalonika | mg |
| mhr | Салоники | mhr |
| Macedonian | Солун | mk |
| Malayalam | തെസ്സലോനികി | ml |
| Mongolian | Салоники | mn |
| Marathi | थेसालोनिकी | mr |
| Malay (macrolanguage) | Thessaloniki | ms |
| Maltese | Thessaloniki | mt |
| nah | Thessaloníki | nah |
| Norwegian Bokmål | Thessaloniki | nb |
| Low German | Thessaloniki | nds |
| Dutch | Thessaloniki | nl |
| Norwegian Nynorsk | Thessaloníki | nn |
| Occitan (post 1500) | Tessalonica | oc |
| Ossetian | Салоники | os |
| pap | Tesalonika | pap |
| Polish | Saloniki | pl |
| pms | Salonich | pms |
| pnb | سالونیکا | pnb |
| pnt | Θεσσαλονίκη | pnt |
| Portuguese | Salonica | pt |
| pt-br | Salônica | pt-br |
| rmy | Thessaloniki | rmy |
| Romanian | Salonic | ro |
| Russian | Салоники | ru |
| rup | Sãrunã | rup |
| Sicilian | Saluniccu | scn |
| Scots | Thessaloniki | sco |
| sh | Solun | sh |
| Sinhala | තෙස්සලෝනිකි | si |
| Slovak | Solún | sk |
| Slovenian | Solun | sl |
| Somali | Salaaniik | so |
| Albanian | Selaniku | sq |
| Serbian | Солун | sr |
| Swedish | Thessaloníki | sv |
| Swahili (macrolanguage) | Thesalonike | sw |
| szl | Salůńiki | szl |
| Tamil | தேசாலோனிக்கி | ta |
| Telugu | థెస్సలానీకీ | te |
| Thai | เทสซาโลนีกี | th |
| Tagalog | Tesalonica | tl |
| tly | Saloniki | tly |
| Turkish | Selanik | tr |
| Tatar | Сәләник | tt |
| Uighur | سەلانىك | ug |
| Ukrainian | Салоніки | uk |
| Urdu | تھیسالونیکی | ur |
| Uzbek | Saloniki | uz |
| vec | Salonico | vec |
| vep | Salonikid | vep |
| Vietnamese | Thessaloniki | vi |
| Volapük | Thessaloniki | vo |
| war | Thessaloniki | war |
| Wu Chinese | 塞萨洛尼基 | wuu |
| Yiddish | סאלאניקי | yi |
| Yoruba | Tessalonika | yo |
| yue | 帖撒羅尼迦 | yue |
| Chinese | 塞萨洛尼基 | zh |
| zh-cn | 塞萨洛尼基 | zh-cn |
| zh-hans | 塞萨洛尼基 | zh-hans |
| zh-hant | 塞薩洛尼基 | zh-hant |
| zh-tw | 塞薩羅尼基 | zh-tw |