2004 in Denmark

Badminton

• Greve Strands BK wins Europe Cup.
• 9–14 March – Jens Eriksen and Martin Lundgaard Hansen wins gold in men's double at the 2004 All England Open Badminton Championships.
• 16–24 April – With three gold medals, three silver medals and five bronze medals, Denmark finishes as the best nation at the 19th European Badminton Championships in Geneve, Switzerland.

Football

• 20 May — FC Copenhagen wins the 2003–04 Danish Cup by defeating Aalborg BK 1–0 in the final.
• 12 June – 4 July — Denmark participates at the UEFA Euro 2004 in Portugal.
  • 22 June – Denmark qualifies for the quarter-finals by drawing with Sweden in the last group stage match.
  • 27 June – Denmark is defeated by Czech Republic in the quarter-final.

Handball

• 1 February — Denmark takes bronze at the 2004 European Men's Handball Championship by defeating Croatia 31–27 in the third place play-off.
• 29 August — Denmark wins gold in the Women's handball tournament at the 2004 Summer Olympics by defeating South Korea in the final.
• 15 December — Denmark wins silver at the 2004 European Women's Handball Championship after being defeated 27–25 by Norway in the final.

Other

• 13 June — Tom Kristensen wins the 2004 24 Hours of Le Mans as part of Audi Sport Japan Team Goh, his sixth win of the 24 Hours of Le Mans race.
• 5–16 May – Denmark wins two bronze medals at the 2004 European Aquatics Championships.
• 25 July — Michael Rasmussen finishes 3rd in the Mountains classification in the 2004 Tour de France.
• 12 November — Mikkel Kessler becomes WBA championship ny defeating Manny Siaca in Copenhagen after taking on the match on a short notice after his stablemate, Mads Larsen, had been injured in training.

January–March

• 19 March – Gustav Mortensen, footballer

April–June

• 13 June – Silas Andersen, footballer
• 20 June – William Clem, footballer

July–September

3 July – Filip Bundgaard, footballer

October–December

• 15 October – Max Ejdum, footballer
• 26 October – Patrick Dorgu, footballer
• 14 December – Annika Wedderkopp, singer

January–March

• 6 February – Jørgen Jersild, composer and music educator (born 1913)
• 5 March
  • Hanne Budtz, politician and lawyer (born 1915)
  • Thorkild Bjørnvig, poet (born 1018)

April–June

• 1 May – Ejler Bille, artist (born 1910)
• 5 May – Kate Mundt, actress (born 1930)

July–September

• 4 September – Rasmus Nellemannm painter and graphic artist (died 1923)
• 14 September – Ove Sprogøe, actor (born 1919)

October–December

• 13 December – Jørn Larsen, painter and sculptor (born 1926)