This is a list of municipalities in Finland having standing links to local communities in other countries known as "town twinning" (usually in Europe) or "sister cities" (usually in the rest of the world). In Finnish the terms ystävyyskaupungit, ystävyyskunnat are used.
Due to Russian invasion of Ukraine, many Finnish municipalities have severed ties with their Russian twin towns. The oldest town twinnings between Finnish and now Russian town are from 1950s.
A Ähtäri
Audru (Pärnu), Estonia Dujiangyan, China Lycksele, Sweden
Asikkala is a member of the Douzelage, a town twinning association of towns across the European Union. Asikkala also has one other twin town.
Douzelage Agros, Cyprus Altea, Spain Bad Kötzting, Germany Bellagio, Italy Bundoran, Ireland Chojna, Poland Granville, France Holstebro, Denmark Houffalize, Belgium Judenburg, Austria Kőszeg, Hungary Marsaskala, Malta Meerssen, Netherlands Niederanven, Luxembourg Oxelösund, Sweden Preveza, Greece Rokiškis, Lithuania Rovinj, Croatia Sesimbra, Portugal Sherborne, England, United Kingdom Sigulda, Latvia Siret, Romania Škofja Loka, Slovenia Sušice, Czech Republic Tryavna, Bulgaria Türi, Estonia Zvolen, Slovakia Other Prienai, Lithuania
E Espoo
Esztergom, Hungary Irving, United States Køge, Denmark Kongsberg, Norway Kristianstad, Sweden Nõmme (Tallinn), Estonia Shanghai, China Skagafjörður, Iceland
Eura
Askersund, Sweden Harku, Estonia
Eurajoki Weener, Germany
F Forssa
Gödöllő, Hungary Sarpsborg, Norway Sault Ste. Marie, Canada
Södertälje, Sweden Struer, Denmark Tierp, Sweden
H Hämeenlinna
Bærum, Norway Celle, Germany Frederiksberg, Denmark Hafnarfjörður, Iceland
Püspökladány, Hungary Sumy, Ukraine Tartu, Estonia Toruń, Poland Uppsala, Sweden Weimar, Germany
Hamina
Falun, Sweden Paide, Estonia Røros, Norway
Hankasalmi
Häädemeeste, Estonia Karmøy, Norway Mjölby, Sweden
Hanko
Gentofte, Denmark Haapsalu, Estonia Halmstad, Sweden Stord, Norway
Heinävesi Körmend, Hungary
Heinola
Karlshamn, Sweden Peine (district), Germany Piešťany, Slovakia
Helsinki does not sign any formal town twinning treaties.
Huittinen
Frederiksværk (Halsnæs), Denmark Hoyerswerda, Germany Keila, Estonia Odda, Norway Stenungsund, Sweden
Hyvinkää
Eigersund, Norway Hersfeld-Rotenburg (district), Germany Kecskemét, Hungary
Kunshan, China Motala, Sweden
I Ii
Bjurholm, Sweden Kronstadt, Russia
Iisalmi
Guldborgsund, Denmark Kirishi, Russia Pécel, Hungary Võru, Estonia
Imatra
Beihai, China Jiaxing, China Ludvika, Sweden Narva-Jõesuu, Estonia Salzgitter, Germany Szigetvár, Hungary Tikhvin, Russia Zvolen, Slovakia
Inari
Handan, China Kola, Russia Nesseby, Norway Sør-Varanger, Norway
Ingå
Fredensborg, Denmark Håbo, Sweden Nittedal, Norway
Isokyrö Vännäs, Sweden
J Jakobstad
Asker, Norway Bünde, Germany Eslöv, Sweden Garðabær, Iceland Jamestown, United States Jūrmala, Latvia Rudersdal, Denmark
Jämijärvi
Geisenfeld, Germany Paide, Estonia
Järvenpää
Buchholz in der Nordheide, Germany Jõgeva County, Estonia Lørenskog, Norway Pasadena, United States Rødovre, Denmark Täby, Sweden Vác, Hungary Volkhov, Russia
Joensuu
Ísafjörður, Iceland Hof, Germany Linköping, Sweden Petrozavodsk, Russia Tønsberg, Norway Vilnius, Lithuania
Jokioinen Põhja-Sakala, Estonia
Juupajoki
Nore og Uvdal, Norway Surahammar, Sweden Wahlstedt, Germany
Jyväskylä
Debrecen, Hungary Esbjerg, Denmark Eskilstuna, Sweden Fjarðabyggð, Iceland Mudanjiang, China Niiza, Japan Potsdam, Germany Poznań, Poland Stavanger, Norway Tartu Parish, Estonia Yaroslavl, Russia
K Kaarina
Enköping, Sweden Jõgeva, Estonia Sovetsky, Russia Szentes, Hungary
Kajaani
Jiujiang, China Marquette, United States Nyíregyháza, Hungary Östersund, Sweden Rostov-on-Don, Russia Schwalm-Eder (district), Germany
Kalajoki
Izumo, Japan Sosnovy Bor, Russia Vansbro, Sweden
Kangasala
Eiði, Faroe Islands Fjallabyggð, Iceland Herning, Denmark Holmestrand, Norway Husby, Germany Jomala, Åland Islands, Finland Paamiut, Greenland
Räpina, Estonia Vänersborg, Sweden Zulpich, Germany
Kannus is a member of the Charter of European Rural Communities, a town twinning association across the European Union. Kannus also has one other twin town.
Charter of European Rural Communities Bienvenida, Spain Bièvre, Belgium Bucine, Italy Cashel, Ireland Cissé, France Desborough, England, United Kingdom Esch (Haaren), Netherlands Hepstedt, Germany Ibănești, Romania Kandava (Tukums), Latvia Kolindros, Greece Lassee, Austria Medzev, Slovakia Næstved, Denmark Nagycenk, Hungary Nadur, Malta Ockelbo, Sweden Pano Lefkara, Cyprus Põlva, Estonia Samuel (Soure), Portugal Starý Poddvorov, Czech Republic Strzyżów, Poland Svoge, Bulgaria Tisno, Croatia Troisvierges, Luxembourg Žagarė (Joniškis), Lithuania Other Ustyuzhna, Russia
Karvia Viru-Nigula, Estonia
Kauhava
Jevnaker, Norway Lemvig, Denmark Rygge, Norway Skærbæk (Tønder), Denmark Þorlákshöfn, Iceland Vimmerby, Sweden
Kauniainen
Danderyd, Sweden Pirita (Tallinn), Estonia
Kemi
Liptovský Mikuláš, Slovakia Luleå, Sweden Newtownards, Northern Ireland, United Kingdom Székesfehérvár, Hungary Tromsø, Norway Wismar, Germany
Kemijärvi
Kandalaksha, Russia Sōbetsu, Japan Vadsø, Norway Vardø, Norway
Kerava
Aschersleben, Germany Arumeru, Tanzania
Keila, Estonia Kristiansand, Norway Ogre, Latvia Reykjanesbær, Iceland Solt, Hungary Trollhättan, Sweden Vladimir, Russia
Keuruu
Jõgeva, Estonia Langeland, Denmark Skaun, Norway Szarvas, Hungary Tingsryd, Sweden Uglich, Russia
Kirkkonummi
Paldiski (Lääne-Harju), Estonia Sundbyberg, Sweden
Kokemäki
Falköping, Sweden Lier, Norway Mariagerfjord, Denmark Põltsamaa, Estonia
Kokkola
Averøy, Norway Boldog, Hungary Fitchburg, United States Fredericia, Denmark Fushun, China Greater Sudbury, Canada Hatvan, Hungary Härnösand, Sweden Järva, Estonia Kristiansund, Norway Marijampolė, Lithuania Mörbylånga, Sweden Ratingen, Germany Ullånger (Kramfors), Sweden
Korsholm
Mandal, Norway Middelfart, Denmark Oskarshamn, Sweden Tõstamaa (Järva), Estonia Varbla (Lääneranna), Estonia
Kotka
Fredrikstad, Norway Gdynia, Poland Glostrup, Denmark Greifswald, Germany Klaipėda, Lithuania Landskrona, Sweden Lübeck, Germany Mykolaiv, Ukraine Taizhou, China Tallinn, Estonia
Kouvola
Balatonfüred, Hungary Mülheim an der Ruhr, Germany Poltava, Ukraine
Kristinestad
Åndalsnes (Rauma), Norway Rosenholm (Syddjurs), Denmark Sala, Sweden
Kuhmo
Kostomuksha, Russia Oroszlány, Hungary Robertsfors, Sweden Šaľa, Slovakia
Kuopio
Besançon, France Bodø, Norway Castrop-Rauxel, Germany Craiova, Romania Gera, Germany Győr, Hungary Jönköping, Sweden Minneapolis, United States Opole, Poland
Pudong (Shanghai), China Svendborg, Denmark Winnipeg, Canada
Kustavi
Faaborg-Midtfyn, Denmark Hole, Norway Strandabyggð, Iceland Tanum, Sweden
Kuusamo
Loukhi, Russia Sanya, China
L Lahti
Akureyri, Iceland Ålesund, Norway Dolni Dabnik, Bulgaria Deyang, China Garmisch-Partenkirchen, Germany Narva, Estonia Norberg, Sweden Pécs, Hungary Randers, Denmark Suhl, Germany Tamsalu (Tapa), Estonia Västerås, Sweden Worcestershire, England, United Kingdom Wuxi, China Zaporizhia, Ukraine Zhangjiakou, China
Laihia
Kil, Sweden Tõrva, Estonia Trysil, Norway
Lappeenranta
Chernihiv, Ukraine Drammen, Norway Klin, Russia Kolding, Denmark Lake Worth, United States Örebro, Sweden Rakvere, Estonia Schwäbisch Hall, Germany Stykkishólmur, Iceland Szombathely, Hungary
Lapua
Hagfors, Sweden Hohenlockstedt, Germany Lantana, United States Rakvere, Estonia Kiskőrös, Hungary
Laukaa
Modum, Norway Östra Göinge, Sweden Stevns, Denmark
Lempäälä
Castiglione del Lago, Italy Øvre Eiker, Norway Priozersky District, Russia Tapolca, Hungary Ulricehamn, Sweden Upplands-Bro, Sweden
Leppävirta
Dovre, Norway Orissaare (Saaremaa), Estonia Schwerte, Germany Storfors, Sweden
Lieto
Herlev, Denmark Höganäs, Sweden Komárno, Slovakia Komárom, Hungary Nesodden, Norway Nõva (Lääne-Nigula), Estonia Seltjarnarnes, Iceland
Liperi
Aalborg, Denmark Büchen, Germany Orsa, Sweden Rendalen, Norway Saku, Estonia
Lohja
Aabenraa, Denmark Lidingö, Sweden Ringerike, Norway Skagaströnd, Iceland Växjö, Sweden
Loimaa
Frogn, Norway Jõhvi, Estonia Mosfellsbær, Iceland Norddjurs, Denmark Skien, Norway Staraya Russa, Russia Thisted, Denmark Türi, Estonia Uddevalla, Sweden
M Mäntsälä Vara, Sweden
Mänttä-Vilppula
Bornholm, Denmark Høyanger, Norway Põltsamaa, Estonia Ronneby, Sweden Shijingshan (Beijing), China Simmern, Germany Stary Oskol, Russia
Mariehamn
Gotland, Sweden Kópavogur, Iceland Kragerø, Norway Kuressaare (Saaremaa), Estonia Lomonosov, Russia Tórshavn, Faroe Islands Valkeakoski, Finland
Mikkeli
Békéscsaba, Hungary Borås, Sweden Luga, Russia Mõisaküla, Estonia Molde, Norway Ostholstein (district), Germany Vejle, Denmark
Muurame
Alatskivi (Peipsiääre), Estonia Vinje, Norway
Mynämäki Paikuse (Pärnu), Estonia
N Naantali
Nordfyn, Denmark Puck, Poland Svelvik, Norway Vadstena, Sweden
Nakkila
Boksitogorsk, Russia Hudiksvall, Sweden
Närpes
Akranes, Iceland Bamble, Norway Roshchino, Russia Tønder, Denmark Västervik, Sweden
Nivala Zirc, Hungary
Nokia
Blönduós, Iceland Horsens, Denmark Karlstad, Sweden Moss, Norway
Nurmes
Laholm, Sweden Ørsta, Norway Segezha, Russia Volda, Norway
Nurmijärvi Lilla Edet, Sweden
Nykarleby
Hammel (Favrskov), Denmark Sollefteå, Sweden Steinkjer, Norway
O Orimattila
Kościelisko, Poland
Durbuy, Belgium
Kozármisleny, Hungary Östhammar, Sweden Tvrdošín, Slovakia Valga, Estonia Valka, Latvia
Oulu
Alta, Norway Arkhangelsk, Russia Astana, Kazakhstan Boden, Sweden Bursa, Turkey Halle, Germany Hangzhou, China Kronstadt, Russia Leverkusen, Germany Matera, Italy Odesa, Ukraine Siófok, Hungary Szigetszentmiklós, Hungary
Outokumpu
Kohtla-Järve, Estonia Schöningen, Germany
P Paimio
Ås, Norway Audru (Pärnu), Estonia Ljungby, Sweden Odenthal, Germany Zelenogorsk, Russia
Pargas
Chudovo, Russia Haninge, Sweden Hiiumaa, Estonia Ulstein, Norway
Parkano
Monselice, Italy Vò, Italy
Pirkkala
Gladsaxe, Denmark Ski, Norway Solna, Sweden Valjala (Saaremaa), Estonia
Pori
Bremerhaven, Germany Eger, Hungary Kołobrzeg, Poland Mâcon, France Porsgrunn, Norway Riga, Latvia Sønderborg, Denmark Stralsund, Germany Sundsvall, Sweden
Porvoo
Dalvíkurbyggð, Iceland Dinkelsbühl, Germany Hamar, Norway Hancock, United States Kamień Pomorski, Poland Lund, Sweden Viborg, Denmark Viimsi, Estonia Viljandi, Estonia
Pudasjärvi
Kronstadt, Russia Loukhi, Russia Vindeln, Sweden
Pyhäjoki Sosnovy Bor, Russia
Pyhtää
Haljala, Estonia Nacka, Sweden
R Raahe
Košice, Slovakia Märjamaa, Estonia Rana, Norway Skellefteå, Sweden
Raisio
Csongrád, Hungary Elmshorn, Germany Kingisepp, Russia Padise (Lääne-Harju), Estonia Sigtuna, Sweden
Rauma
Boynton Beach, United States Gävle, Sweden Gjøvik, Norway Kaposvár, Hungary Næstved, Denmark Zhuhai, China
Rautalampi Torsby, Sweden
Riihimäki
Aalborg, Denmark Bad Segeberg, Germany
Jonava, Lithuania Karlskoga, Sweden Lillestrøm, Norway Norðurþing, Iceland Olaine, Latvia Real Sitio de San Ildefonso, Spain
Szolnok, Hungary
Rovaniemi
Ajka, Hungary Alanya, Turkey Cadillac, United States Grindavík, Iceland Harbin, China Kassel, Germany Kiruna, Sweden
Narvik, Norway Neustrelitz, Germany Olsztyn, Poland Sankt Johann in Tirol, Austria Veszprém, Hungary
S Saarijärvi
Gran, Norway Kungsbacka, Sweden Trittau (Amt), Germany
Salla
Arjeplog, Sweden Båtsfjord, Norway Kovdor, Russia Wildau, Germany
Salo
Anija, Estonia Elva, Estonia Gárdony, Hungary