1654 in Denmark

Events from the year 1654 in Denmark.

Incumbents

Monarch – Frederick III{{cite web|title=Frederick III: king of Denmark and Norway|url=https://www.britannica.com/biography/Frederick-III-king-of-Denmark-and-Norway|website=Encyclopedia Britannica|access-date=18 November 2019|language=en}}
Steward of the Realm – Joachim Gersdorff

12 August – Total solar eclipse across large parts of Jutland, Funen and Zealand.{{cite web|last1=Espenak|first1=Fred|title=NASA - Total Solar Eclipse of 1654 August 12|url=https://eclipse.gsfc.nasa.gov/SEsearch/SEsearchmap.php?Ecl=16540812|website=eclipse.gsfc.nasa.gov}}
1 October – Formal diplomatic relations with the United Kingdom begins: The United Kingdom opens an embassy in Copenhagen. Denmark has an embassy in London.

;Undated

John Maurice, Prince of Nassau-Siegen presents Frederick III with a collection of works by Albert Eckhout from Brazil, comprising eight full-length portraits of local people of varying ethnicity, 12 still lifes of local produce and vegetation and three portraits.{{cite web|url=https://natmus.dk/historisk-viden/verden/syd-og-mellemamerika/eckhout-malerierne/|title=Eckhout-malerierne fra Brasilien i 1640'erne|language=Danish|publisher=Nationalmuseet|access-date=16 June 2022}}

28 March – Sophie Amalie Moth, royal mistress (died 1719)
5 June – Hans Munch, theologian and priest, bishop of Christianssand and of Christiania (died 1712).{{cite encyclopedia|url=https://runeberg.org/dbl/11/0510.html|title=Munch, Hans|first=Daniel|last=Thrap|author-link=Daniel Thrap|editor-first=C.F.|editor-last=Bricka|editor-link=Carl Frederik Bricka|volume=XI|access-date= 3 March 2021|year=1887–1905|encyclopedia=Dansk biografisk Lexikon|language=Danish|location=Copenhagen|publisher=Gyldendalske boghandels forlag}}