1781 in Denmark

• Monarch – Christian VII^[1]
• Prime minister – Ove Høegh-Guldberg

• 18 June – The county of Lindenborg is established by Heinrich Carl von Schimmelmann from the manors of Lindenborg, Gudumlund, Vildmosegaard, TiendegÃ¥rden, Henriksdal, Louisendal and ThoruphedegÃ¥rd.

Kilder

• 2 January – Frederik Michael Ernst Fabritius de Tengnagel, military officer and landscape painter (died 1849)
• 12 June – Anne Marie Mangor, cookbook writer (died 1865)
• 2 July – Erich Christian Werlauff, historian (died 1871)
• 18 September – Andreas Buntzen, businessman (died 1830)
• 2 October – Bernt Wilhelm Westermann, businessman and insect collector (died 1868)
• 12 October – Ludvig Mariboe, Norwegian businessman, publisher and politician (died 1841)
• 16 December – Caspar Henrik Wolfsen, privateer and customs inspector (died 1836)

• 22 February – Anna Magdalena Godiche, publisher (born 1721)
• 17 March – Johannes Ewald, dramatist, poet (born 1743)
• 10 April – Reinhard Iselin, businessperson (born 1714 in Switzerland)
• 25 May – Frederik Horn, chief of police in Copenhagen and president of Hof- og Stadsretten (born 1708)
• 30 August – Georg David Anthon, architect (born 1714 in Germany)
• 25 December – Wolf Veit Christoph von Reitzenstein, county governor and headmaster (born 1810)