1520s in Denmark

Incumbents

• Monarch – Christian II, Frederick I
• Steward of the Realm – Mogens Gøye

Events

• 5 February – the Battle of Falun ignites the Swedish War of Liberation. Falun is captured by Swedish forces.
• early April – Danish and Norwegian forces are driven out of Brunnbäck following their defeat at the Battle of Brunnbäck Ferry.
• 29 April – Västerås is captured by Swedish forces after the defeat of Danish forces in the Battle of Västerås.

• 27 May – Uppsala is captured by Swedish rebels after the defeat of Danish forced at the Conquest of Kalmar.
• 17 June – the Conquest of Stockholm drives out the last of the Danish forces from Stockholm.
• 7 August – Frederick I is crowned King after Christian II is forced to abdicate by the nobility.

• 1 September – the Treaty of Malmö officially ends the Swedish War of Liberation, ending the Kalmar Union between Denmark, Norway, and Sweden by acknowledging the independent status of Sweden and forming the union of Denmark–Norway.
• Undated Sæby is incorporated as a market town.

• Hans Tausen begins preaching Lutheran doctrines in Viborg.
• Tyge Krabbe succeeds Otte Krumpen as Marshal of the Realm.

Births

• 7 January – Peder Oxe, statesman
• 10 May – Otte Rud, admiral during the Northern Seven Years' War
• 10 November – Dorothea of Denmark, princess of Denmark and Electress Palatine
• Undated – Christen Munk, Governor-general of Norway

• 21 June – John the Elder, prince of Denmark and Duke of Schleswig-Holstein-Haderslev
• November – Christina of Denmark, princess of Denmark and Duchess-consort of Milan

• 14 October – Elizabeth of Denmark, princess of Denmark and a Duchess of Mecklenburg

• 1 September – Christoffer Valkendorff, statesman

• 25 January – Adolf, Duke of Holstein-Gottorp, prince of Denmark
• 30 April – Beate Clausdatter Bille, noblewoman and vassal

• Dorothea of Denmark, princess of Denmark and Duchess consort of Mecklenburg

• Christen Munk, Governor-general of Norway
• Povel Huitfeldt, Governor-general of Norway
• Melchior Lorck, painter and printmaker

Deaths

• 8 December 1521 – Christina of Saxony, Queen consort of Denmark, Norway and Sweden
• 24 January 1522 – Didrik Slagheck, Roman Catholic archbishop of Lund
• 30 May 1526 – Morten Børup, educator and writer