Events from the year 1805 in Denmark.

Incumbents
 Monarch – Christian VII
 Prime minister – Christian Günther von Bernstorff

Events

 25 August  A. C. Gamél us founded when Augustin Cyrille Gamél opens a delicacy shop on Østergade in Copenhagen.

Undated
 Christiansø Lighthouse is first lit.

Births
 1 January – Fritz Petzholdt, painter (died 1838)
 7 January  Louis Aumont, painter (died 1879)
 2 April – Hans Christian Andersen, writer of plays, travelogues, novels, poems and fairy tales (died 1875)
 14 May – Johan Peter Emilius Hartmann, composer (died 1900)
 2 July  Hans Ditmar Frederik Feddersen, civil servant and politician (died 1863)
 21 August – August Bournonville, ballet master and choreographer (died 1879)

Deaths
 4 March  Hinrich Ladiges, businessman (born 1731)
 7 December – Frederick, Hereditary Prince of Denmark (born 1753)

References

 
1800s in Denmark
Denmark
Years of the 19th century in Denmark