1825 in Denmark

Undated

• - A storm penetrates the narrow land mass, Agger Tange, separating Northern Jutland from the mainland Jutland for the first time since the 12th century.^{[citation needed]}
• The Copenhagen Art Society is founded by a circle of the most influential figures of the Danish art world during the Danish Golden Age.^[2]

Art

• Martinus Rørbye paints the View from the Artist's Window in his parents' home at Amaliegade 45.

• 
  Martinus Rørbye: View from the Artist's Window

January–March

• 28 January – Moses Melchior, businessman (died 1912)

April–June

• 16 April – Jacob Brønnum Scavenius Estrup, politician, prime minister of Denmark (died 1913)
• 10 May – Heinrich Tønnies, photographer (died 1903)
• 20 May – Carl Christian Amussen, Utah's first jeweler (died 1902)

October–December

• 16 October – Anders Peter Westenholz, businessman and consul-general (died 1886)^[3]
• 19 November – Jacob Kornerup, archeologist (died 1913)
• 30 November – Julius Exner, painter (died 1910)
• 24 November – Herman Løvenskiold, county governor (born 1783)

January–March

• 4 January – Johan Peter Wleugel, naval officer and cartographer (born 1736 in Norway)
• 16 February – Georg Gerson, composer and banker (born 1790)

April–June

• 8 April – Carl Ferdinand Degen, mathematician (born 1766 in Germany)
• 19 May – Peter Hersleb Classen, statesman (born 1738 in Norway)

July–September

• 20 August – Adolph Tobias Herbst, naval officer (born 1746)

October–December

• 21 November – Daniel Gotthilf Moldenhawer, philologist, theologian, librarian, bibliophile, palaeographer, diplomat, and Bible translato (born (born in 1835 in Prussia)
• 30 December – Peter Grønland, composer (born 1761)