1804 in Denmark
Events from the year 1804 in Denmark.
Incumbents
- Monarch – Christian VII
- Prime minister – Christian Günther von Bernstorff
Events

- 6 October – HDMS Prinds Christian Frederik is launched from Orlogsværftet on Nyholm in Copenhagen.
Births
January–March
- 18 February – Christian Holm, painter (died 1846)
- 28 February – Carl van Dockum, naval officer (died 1893)
- 20 March – Wilhelm Bendz, painter (died 1832)
July–September
- 14 September – Niels Peter Holbech, painter (died 1889)
- 7 August – Johan Nicolai Madvig, philologist and politician (died 1886)
October–December
- 3 November – Constantin Hansen, painter (died 1880)
Deaths
January–March
- 28 March – Frederik Christian Kaas, Admiral, landowner (born 1727)
April–June
- 13 May – David Brown, merchant and Governor of Tranquebar (born 1734)
- 2 June – Cornelius Høyer, miniatures painter (born 1741)
- 26 June – Jørgen Landt, priest, botanist and author (born 1751)
July–September
- Marie Martine Bonfils, brewer
- 5 July – Jacob Baden, philologist, pedagogue, and critic (born 1735)
- 7 September – Christian Henrik Biering, clergy and writer (born 1729)
October–December
- 21 October – Poul Abraham Lehn, nobleman and landowner (born 1732)
- 24 December – Martin Vahl, naturalist (born 1749)