Events from the year 1830 in Denmark.

• Monarch – Frederick VI^[1]
• Prime minister – Otto Joachim

• 3 May – the Royal Danish Defence College is established by Frederik VI.

• Wilhelm Bendz paints The Waagepetersen Family.
• The settlements of Alluitsup Paa, Kitsissuarsuit, Narsaq, and Qeqertaq are established in Greenland.

• 18 April – Louise Bille-Brahe, court member (died 1910)
• 13 December – Mathilde Fibiger, feminist, novelist and telegraphist (died 1872)

• 22 April – Knud Lyne Rahbek, literary historian, critic, writer, poet, magazine editor and art administrator (born 1760)
• 14 May – Urban Jürgensen, clockmaker (born 1776)
• 9 June – Andreas Buntzen, businessman (born 1781)
• 9 December – Heinrich Christian Friedrich Schumacherm physician (born 1757)