1450s in Denmark

• Monarch — King Christian I{{cite web|title=Christian I: Scandinavian king|url=https://www.britannica.com/biography/Christian-I-Scandinavian-king|website=Encyclopedia Britannica|access-date=19 November 2019|language=en}}

• Steward of the Realm – Otte Nielsen Rosenkrantz (1445–52), Niels Eriksen Gyldenstjerne (1453–56), Erik Ottesen Rosenkrantz (1456–1480)

;1450

• 13 May – Christian I of Denmark becomes King of Norway
• 29 August {{ndash}} The Treaty of Bergen is signed in Bergen.

;1451

• Brønshøj Church is expanded with a tower.{{cite web|url=https://www.kobenhavnshistorie.dk/bog/khsd/1400/1451.html|title=1451|language=da|publisher=Selskabet for Københavns Historie|access-date=27 September 2017|archive-url=https://web.archive.org/web/20170928060049/https://www.kobenhavnshistorie.dk/bog/khsd/1400/1451.html|archive-date=2017-09-28|url-status=dead}}

;1454

• The Royal Brewery on Slotsholmen is mentioned for the first time.{{cite web|url=https://www.kobenhavnshistorie.dk/bog/khsd/1400/1454.html|title=1454|language=da|publisher=Selskabet for Københavns Historie|access-date=27 September 2017|archive-url=https://web.archive.org/web/20170928060118/https://www.kobenhavnshistorie.dk/bog/khsd/1400/1454.html|archive-date=2017-09-28|url-status=dead}}
• The town of Billund ("Byllundt") is mentioned for the first time.

;1455

• June – Denmark enters the Thirteen Years' War when Christian I declares war against Poland and the Prussian Confederation. This means nothing more than a disturbance in trade, however, since Denmark is still busy fighting with Sweden.
• 14 September – Christian I confirms Copenhagen's old privileges and orders a refurbishment of its fortifications.{{cite web|url=https://www.kobenhavnshistorie.dk/bog/khsd/1400/1455.html|title=1455|language=da|publisher=Selskabet for Københavns Historie|access-date=27 September 2017|archive-url=https://web.archive.org/web/20170928060150/https://www.kobenhavnshistorie.dk/bog/khsd/1400/1455.html|archive-date=2017-09-28|url-status=dead}}

;1456

• Christian I reassumes the title of Duke of Estonia in spite of the fact that Danish Estonia was sold in 1446.
• The Battle of Bornholm (1456) takes place near the Danish island of Bornholm, between privateers from the city of Gdańsk (Danzig) and a transport convoy of Danish and Livonian ships which were attempting to bring supplies and reinforcements to the Teutonic Knights in Prussia.

;1457

• 23 June – Christian I of Denmark becomes King of Sweden

;1452

• Date unknown {{ndash}} Johan Jepsen Ravensberg, clergy ad statesman (died 1512){{cite web|url=https://biografiskleksikon.lex.dk/Tetz_Rosengaard|title=Tetz Rosengaard|language=Danish|website=Dansk Biografisk Leksikon|accessdate=9 September 2019}}

;1455

• 2 February – John, King of Denmark (died 1513){{cite web|title=John: king of Denmark, Norway, and Sweden|url=https://www.britannica.com/biography/John-king-of-Denmark-Norway-and-Sweden|website=Encyclopedia Britannica|access-date=19 November 2019|language=en}}

;1456

• 23 June – Margaret of Denmark, Queen of Scotland (died 1486)

;1459

• c. June – Eric VII, King of Denmark, Norway and Sweden, deposed in 1439 (born c. 1381){{cite web|title=Erik VII: king of Denmark, Norway, and Sweden|url=https://www.britannica.com/biography/Erik-VII|website=Encyclopedia Britannica|access-date=19 November 2019|language=en}}
• 4 December – Adolphus VIII, Count of Holstein (born 1401)

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Category:1450s in Denmark