• Monarch – Margrethe II^[1]
• Prime minister – Anker Jørgensen (until 19 December), Poul Hartling

• 1 January – Denmark joined the European Economic Community (EEC) along with Ireland and the United Kingdom.
• 4 December – 1973 Danish parliamentary election is held, it is later to become known as the Landslide Election (Danish: Jordskredsvalget), because 5 new parties got elected, and more than half the members of the parliament were replaced.^[2]

Badminton edit

• 12–17 March – 1973 Denmark Open
  • Elo Hansen and Ulla Strand win gold in mixed doubles

Handball edit

• 1 May – GOG Håndbold is founded

January–March edit

• 4 January – Frank Høj, cyclist
• 10 January – Jakob Cedergren, actor
• 11 March – Bjarne Corydon, politician, editor-in-chief
• 24 March – Mette Jacobsen, freestyle and butterfly swimmer
• 29 March – Kasper Holten, stage director

April–September edit

• 29 April – Yildiz Akdogan, politician
• 5 July – Camilla Andersen, handball player
• 24 September – Barbara Bertelsen, civil servant
• 25 September – Jakob Ellemann-Jensen, politician

October–December edit

• 9 October – Thomas Frank

• 16 March – Inger Støjberg, politician
• 9 April – Sigurd Swane, painter (born 1879)
• 1 May – Asger Jorn, painter (born 1914)
• 9 August – Christian Arhoff, actor (born 1893)
• 23 November – Helga Foght, textile artist (born 1902)

• 1973 in Danish television