The relations between

Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...

and

Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...

span a long history of interaction. The inhabitants of each speak related

North Germanic languages The North Germanic languages make up one of the three branches of the Germanic languages—a sub-family of the Indo-European languages—along with the West Germanic languages and the extinct East Germanic languages. The language group is also r ...

, which have a degree of mutual intelligibility. Both countries formed part of the

Kalmar Union The Kalmar Union was a personal union in Scandinavia, agreed at Kalmar in Sweden as designed by Queen Margaret I of Denmark, Margaret of Denmark. From 1397 to 1523, it joined under a single monarch the three kingdoms of Denmark, Sweden (then in ...

between 1397 and 1523, but there exists an inherited cultural competition between Sweden and Denmark. From 1448 to 1790 the two kingdoms went to war against each other at nearly every opportunity; in more than one case a new king tried to prove his worth by waging war on the other country for little or no political reason. Several Dano-Swedish wars took place between 1521 and 1814. Today, the countries are separated by the

Øresund Øresund or Öresund (, ; ; ), commonly known in English as the Sound, is a strait which forms the Denmark–Sweden border, Danish–Swedish border, separating Zealand (Denmark) from Scania (Sweden). The strait has a length of ; its width var ...

, which links the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...

and the

North Sea The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Se ...

. Denmark has an embassy in

Stockholm Stockholm (; ) is the Capital city, capital and List of urban areas in Sweden by population, most populous city of Sweden, as well as the List of urban areas in the Nordic countries, largest urban area in the Nordic countries. Approximately ...

and 2 consulates-general (in

Gothenburg Gothenburg ( ; ) is the List of urban areas in Sweden by population, second-largest city in Sweden, after the capital Stockholm, and the fifth-largest in the Nordic countries. Situated by the Kattegat on the west coast of Sweden, it is the gub ...

and

Malmö Malmö is the List of urban areas in Sweden by population, third-largest city in Sweden, after Stockholm and Gothenburg, and the List of urban areas in the Nordic countries, sixth-largest city in Nordic countries, the Nordic region. Located on ...

). Sweden has an embassy in

Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...

and 16 honorary consulates. Both countries are full members of the

Nordic Council The Nordic Council is the official body for formal inter-parliamentary Nordic cooperation among the Nordic countries. Formed in 1952, it has 87 representatives from Denmark, Finland, Iceland, Norway, and Sweden as well as from the autonomo ...

, of the

Council of the Baltic Sea States The Council of the Baltic Sea States (CBSS) is a regional intergovernmental organisation working on three priority areas: regional identity; regional safety and security; regional sustainability and prosperity. These three priority areas aim ...

, of the

Council of Europe The Council of Europe (CoE; , CdE) is an international organisation with the goal of upholding human rights, democracy and the Law in Europe, rule of law in Europe. Founded in 1949, it is Europe's oldest intergovernmental organisation, represe ...

European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...

and

NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...

. Around 21,000

Swedish people Swedes (), or Swedish people, are an ethnic group native to Sweden, who share a common ancestry, Culture of Sweden, culture, History of Sweden, history, and Swedish language, language. They mostly inhabit Sweden and the other Nordic countries, ...

live in Denmark and around 42,000

Danish people Danes (, ), or Danish people, are an ethnic group and nationality native to Denmark and a modern nation identified with the country of Denmark. This connection may be ancestral, legal, historical, or cultural. History Early history Denmark ...

live in Sweden.

Historic conflicts

Since

Gustav Vasa Gustav Eriksson Vasa (12 May 1496 – 29 September 1560), also known as Gustav I, was King of Sweden from 1523 until his death in 1560. He was previously self-recognised Protector of the Realm (''Reichsverweser#Sweden, Riksföreståndare'') fr ...

consolidated the Swedish nation-state after the break-up of the

in 1523, Sweden and Denmark have fought several wars.

Second Northern War

The Second Northern War (1655–60) was fought between Sweden and its adversaries the

Polish–Lithuanian Commonwealth The Polish–Lithuanian Commonwealth, also referred to as Poland–Lithuania or the First Polish Republic (), was a federation, federative real union between the Crown of the Kingdom of Poland, Kingdom of Poland and the Grand Duchy of Lithuania ...

(1655–60), Russia ( 1656–58), Brandenburg-Prussia (1657–60), the

Habsburg monarchy The Habsburg monarchy, also known as Habsburg Empire, or Habsburg Realm (), was the collection of empires, kingdoms, duchies, counties and other polities (composite monarchy) that were ruled by the House of Habsburg. From the 18th century it is ...

(1657–60) and

Denmark–Norway Denmark–Norway (Danish language, Danish and Norwegian language, Norwegian: ) is a term for the 16th-to-19th-century multi-national and multi-lingual real unionFeldbæk 1998:11 consisting of the Kingdom of Denmark, the Kingdom of Norway (includ ...

( 1657–58 and 1658–60). The

Dutch Republic The United Provinces of the Netherlands, commonly referred to in historiography as the Dutch Republic, was a confederation that existed from 1579 until the Batavian Revolution in 1795. It was a predecessor state of the present-day Netherlands ...

often intervened against Sweden. In 1655,

Karl X Gustav of Sweden Charles X Gustav, also Carl X Gustav (; 8 November 1622 – 13 February 1660), was King of Sweden from 1654 until his death. He was the son of John Casimir, Count Palatine of Zweibrücken-Kleeburg and Catherine of Sweden. After his father's ...

invaded and occupied western Poland-Lithuania, the eastern half of which was already occupied by Russia. The rapid Swedish advance became known in Poland as

Swedish Deluge The Deluge was a series of mid-17th-century military campaigns in the Polish–Lithuanian Commonwealth. In a wider sense, it applies to the period between the Khmelnytsky Uprising of 1648 and the Truce of Andrusovo in 1667, comprising the Pol ...

. The

Grand Duchy of Lithuania The Grand Duchy of Lithuania was a sovereign state in northeastern Europe that existed from the 13th century, succeeding the Kingdom of Lithuania, to the late 18th century, when the territory was suppressed during the 1795 Partitions of Poland, ...

became a Swedish fief, the Polish-Lithuanian regular armies surrendered and the Polish king

John II Casimir Vasa John II Casimir Vasa (; ; 22 March 1609 – 16 December 1672) was King of Poland and Grand Duke of Lithuania from 1648 to his abdication in 1668 as well as a claimant to the throne of Sweden from 1648 to 1660. He was the first son of Sigis ...

fled to the Habsburgs.

Frederick William, Elector of Brandenburg Frederick William (; 16 February 1620 – 29 April 1688) was Elector of Brandenburg and Duke of Prussia, thus ruler of Brandenburg-Prussia, from 1640 until his death in 1688. A member of the House of Hohenzollern, he is popularly known as "th ...

and

Duke of Prussia The monarchs of Prussia were members of the House of Hohenzollern who were the hereditary rulers of the former German state of Prussia from its founding in 1525 as the Duchy of Prussia. The Duchy had evolved out of the Teutonic Order, a Roman C ...

initially supported the estates in

Royal Prussia Royal Prussia (; or , ) or Polish PrussiaAnton Friedrich Büsching, Patrick Murdoch. ''A New System of Geography'', London 1762p. 588/ref> (Polish: ; German: ) became a province of the Crown of the Kingdom of Poland, which was annexed follow ...

, but allied with Sweden in return for receiving the Duchy of Prussia as a Swedish fief. Exploiting the hurt religious feelings of the Roman Catholic population under

Protestant Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...

occupation and organizing Polish-Lithuanian military leaders in the Tyszowce Confederation, John II Casimir Vasa managed to regain ground in 1656. Russia took advantage of the Swedish setback, declared war on Sweden and pushed into Lithuania and

Swedish Livonia Swedish Livonia () was a dominion of the Swedish Empire from 1629 until 1721. The territory, which constituted the southern part of modern Estonia (including the island of Ösel ceded by Denmark after the Treaty of Brömsebro) and the northe ...

. Charles X Gustav then granted Frederick William I full sovereignty in the Duchy of Prussia in return for military aid, and in the

Treaty of Radnot Treaty of Radnot was a treaty signed during the Second Northern War in Radnot in Transylvania (now Iernut in Romania) on 6 December 1656. The treaty divided the Polish–Lithuanian Commonwealth between the signing parties. According to the treaty ...

allied himself with the

Transylvania Transylvania ( or ; ; or ; Transylvanian Saxon dialect, Transylvanian Saxon: ''Siweberjen'') is a List of historical regions of Central Europe, historical and cultural region in Central Europe, encompassing central Romania. To the east and ...

George II Rákóczi George II Rákóczi (30 January 1621 – 7 June 1660), was a Hungarian nobleman, Prince of Transylvania (1648-1660), the eldest son of George I and Zsuzsanna Lorántffy. Early life He was elected Prince of Transylvania during his father' ...

who invaded Poland-Lithuania from the southeast. John II Vasa found an ally in Leopold I of Habsburg, whose armies crossed into Poland-Lithuania from the southwest. This triggered

Frederick III of Denmark Frederick III (; 18 March 1609 – 9 February 1670) was King of Denmark and Norway from 1648 until his death in 1670. He also governed under the name Frederick II as diocesan administrator (colloquially referred to as prince-bishop) of the ...

's invasion of the Swedish mainland in the spring of 1657, in an attempt to settle old scores from the

Torstenson War The Torstenson War was fought between Sweden and Denmark–Norway from 1643 to 1645. The name derives from Swedish general Lennart Torstenson. Denmark-Norway had withdrawn from the Thirty Years' War in the 1629 Treaty of Lübeck. After its vic ...

while Sweden was busy elsewhere. Brandenburg left the alliance with Sweden when granted full sovereignty in the Duchy of Prussia by the Polish king in the treaties of

Wehlau Znamensk (; ; ; ) is a rural locality (a settlement) in Gvardeysky District of Kaliningrad Oblast, Russia, located on the right bank of the Pregolya River at its confluence with the Lava River east of Kaliningrad. Population figures: Histo ...

and

Bromberg Bydgoszcz is a city in northern Poland and the largest city in the historical region of Kuyavia. Straddling the confluence of the Vistula River and its left-bank tributary, the Brda, the strategic location of Bydgoszcz has made it an inland ...

Dano-Swedish War (1658–60)

The Dano-Swedish War of 1658–60 was a war between

and

. It was a continuation of an earlier conflict between the two belligerents which had ended just months earlier, after Sweden and Denmark brokered a peace agreement in

Roskilde Roskilde ( , ) is a city west of Copenhagen on the Danish island of Zealand. With a population of 53,354 (), the city is a business and educational centre for the region and the 10th largest city in Denmark. It is governed by the administrative ...

in 1658. In the aftermath of that conflict, the Swedish king

Charles X Gustav Charles X Gustav, also Carl X Gustav (; 8 November 1622 – 13 February 1660), was King of Sweden from 1654 until his death. He was the son of John Casimir, Count Palatine of Kleeburg, John Casimir, Count Palatine of Palatinate-Kleeburg, Zweib ...

desired to add the province of

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

to the Swedish realm, but his position in the region was not strong enough with the opposition of

Brandenburg Brandenburg, officially the State of Brandenburg, is a States of Germany, state in northeastern Germany. Brandenburg borders Poland and the states of Berlin, Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony. It is the List of Ger ...

and

Austria Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...

.Frost, p. 180. However, the Danes stalled and prolonged the fulfillment of some provisions of the earlier peace; the Swedish king decided to use this as a pretext to attack with an ambitious goal: to vanquish Denmark as a sovereign state and raze the capital of

. A quick and decisive defeat of Denmark was however only seen as a means to a greater end. The long-term goal was to wage war in Europe without fearing Danish interference.

Scanian War

The Scanian War (1675 to 1679) was a part of the

Northern Wars "Northern Wars" is a term used for a series of wars fought in northern Europe, northern and northeastern Europe from the 16th to the 18th century, primarily between the territorial rivals of the Swedish Empire, Tsardom of Russia, Poland–Lithuani ...

involving the union of

and

. It was fought mainly on Scanian soil, in the former Danish provinces along the border with Sweden and in Northern Germany. While the latter battles are regarded a theater of the Scanian war in English, Danish and Swedish historiography, they are seen as a separate war in German historiography, called the Swedish-Brandenburgian War. The war was prompted by the Swedish involvement in the

Franco-Dutch War The Franco-Dutch War, 1672 to 1678, was primarily fought by Kingdom of France, France and the Dutch Republic, with both sides backed at different times by a variety of allies. Related conflicts include the 1672 to 1674 Third Anglo-Dutch War and ...

. Sweden had allied with France against several European countries. The United Provinces, under attack by France, sought support from Denmark–Norway. After some hesitation, King

Christian V Christian V (15 April 1646 – 25 August 1699) was King of Denmark and Norway from 1670 until his death in 1699. Well-regarded by the common people, he was the first king anointed at Frederiksborg Castle chapel as absolute monarch since the de ...

started the invasion of the Scania (Skåneland) in 1675, while the Swedish were occupied with a war against

. The invasion of Scania was combined with a simultaneous Norwegian front called the Gyldenløve Wae, forcing the defending Swedes to fight a two-front war in addition to their entanglements in the

Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...

Cultural links

There are extensive cultural links between Denmark and Sweden, which are often referred to as "brotherfolks" (Danish/Swedish: ''broderfolk'' ; in Swedish also ''brödrafolk'').

Skåneland Skåneland is a region on the southern Scandinavian Peninsula. It includes the Sweden, Swedish provinces of Sweden, provinces of Blekinge, Halland, and Skåne, Scania. The Denmark, Danish island of Bornholm is traditionally also included.For pop ...

(Blekinge, Bornholm, Halland and Scania) used to be an integral part of Denmark. At the Second Treaty of Brömsebro in 1645, Halland was transferred to Sweden for 30 years. At the

Treaty of Roskilde The Treaty of Roskilde was negotiated at Høje Taastrup Church and was concluded on 26 February ( OS) or 8 March 1658 ( NS) during the Second Northern War between Frederick III of Denmark–Norway and Karl X Gustav of Sweden in the Danish ci ...

in 1658, Halland became a permanent part of Sweden. Blekinge, Bornholm and Scania also became Swedish in 1658. However, the Treaty of Copenhagen in 1660 restored Bornholm to Denmark. The construction of the

Øresund Bridge The Øresund or Öresund Bridge is a combined List of road–rail bridges, railway and motorway cable-stayed bridge across the Øresund strait between Denmark and Sweden. It is the second longest bridge in Europe and combines both roadway and r ...

has rekindled ties between the nations, with the creation of the

Øresund Region Øresund or Öresund (, ; ; ), commonly known in English as the Sound, is a strait which forms the Denmark–Sweden border, Danish–Swedish border, separating Zealand (Denmark) from Scania (Sweden). The strait has a length of ; its width var ...

as the transnational metropolitan area comprising

and

. In addition, many Swedes and Danes consider themselves culturally and historically linked, in large part because the languages are to some degree mutually intelligible. Even in modern times, there have been serious talks of a Nordic Union, either within or in competition with the

, and a

Nordic Passport Union The Nordic Passport Union allows citizens of the Nordic countries—Iceland, Denmark, Norway, Sweden, and Finland—to travel and reside in another Nordic country without any travel documentation (e.g. a passport or national identity card) or ...

has been in existence since 1952, allowing all citizens of the Nordic countries to travel freely without documents. Sweden has 16 honorary consulates (in

Aabenraa Aabenraa (; , ; South Jutlandic: ''Affenråe'', also known as Åbenrå) is a town in Southern Denmark, at the head of the Aabenraa Fjord, an arm of the Little Belt, north of the Denmark–Germany border and north of German town of Flensburg. It ...

Aarhus Aarhus (, , ; officially spelled Århus from 1948 until 1 January 2011) is the second-largest city in Denmark and the seat of Aarhus municipality, Aarhus Municipality. It is located on the eastern shore of Jutland in the Kattegat sea and app ...

Aalborg Aalborg or Ålborg ( , , ) is Denmark's List of cities and towns in Denmark, fourth largest urban settlement (behind Copenhagen, Aarhus, and Odense) with a population of 119,862 (1 July 2022) in the town proper and an Urban area, urban populati ...

Esbjerg Esbjerg (, ) is a seaport city and seat of Esbjerg Municipality on the west coast of the Jutland peninsula in southwest Denmark. By road, it is west of Kolding and southwest of Aarhus. With an urban area, urban population of 71,554 (1 January ...

Frederikshavn Frederikshavn () is a Danish town in Frederikshavn municipality, Region Nordjylland, on the northeast coast on the North Jutlandic Island in northern Denmark. Its name translates to "Frederik's harbor". It was originally named Fladstrand. The ...

Grenaa Grenaa (or Grenå) is a Danish town and seaport on the east coast of the Jutland peninsula. Tourism, education and commerce are important sectors in the economy of Grenaa. It is the only larger town on Djursland. Grenaa is the municipal seat, a ...

Helsingør Helsingør ( , ; ), classically known in English as Elsinore ( ), is a coastal city in northeastern Denmark. Helsingør Municipality had a population of 63,953 on 1 January 2025, making it the 23rd most populated municipality in Denmark. Helsin ...

Holbæk Holbæk () is a town in Denmark and the County seat, seat of Holbæk municipality with a population of 30,903 (1 January 2025).Kolding Kolding () is a Denmark, Danish seaport city located at the head of Kolding Fjord in the Region of Southern Denmark. It is the seat of Kolding Municipality. It is a transportation, commercial, and manufacturing centre and has numerous industria ...

Nuuk Nuuk (; , formerly ) is the capital and most populous city of Greenland, an autonomous territory in the Kingdom of Denmark. Nuuk is the seat of government and the territory's largest cultural and economic center. It is also the seat of gove ...

Nykøbing Falster Nykøbing Falster (; originally named Nykøbing) is a city on the island of Falster in southern Denmark. It has a population of 16,682 (1 January 2025). Including the satellite town Sundby (Lolland), Sundby on the Lolland side, with a populatio ...

Odense Odense ( , , ) is the third largest city in Denmark (after Copenhagen and Aarhus) and the largest city on the island of Funen. As of 1 January 2025, the city proper had a population of 185,480 while Odense Municipality had a population of 210, ...

Rønne Rønne () is the largest town on the Denmark, Danish island of Bornholm in the Baltic Sea. It has a population of 13,675 (1 January 2025). It was a municipality in its own right from 1970 until 2002, when Bornholm was a Bornholm County, county (D ...

Skagen Skagen () is the northernmost town in Denmark, on the east coast of the Skagen Odde peninsula in the far north of Jutland, part of Frederikshavn Municipality in North Denmark Region, Nordjylland, north of Frederikshavn and northeast of Aalbo ...

Tórshavn Tórshavn (; ; Danish language, Danish: ''Thorshavn''), usually locally referred to as simply Havn, is the capital and largest city of the Faroe Islands. It is located in the southern part on the east coast of Streymoy. To the northwest of th ...

and Viborg).

Resident diplomatic missions

* Denmark has an embassy in

. * Sweden has an embassy in

References

External links

Danish embassy in Stockholm (in Danish only)

Swedish embassy in Copenhagen

Danish-Swedish association
{{DEFAULTSORT:Denmark-Sweden relations

Bilateral relations of Sweden Øresund Region