Events from the year 1911 in Denmark.

• Monarch – Frederick VIII^[1]
• Prime minister – Klaus Berntsen

• 21 April – The Danish Society for Nature Conservation is founded.^{[citation needed]}

• The Royal Danish Navy begins building its fleet of Havmanden-class submarines.^{[citation needed]}

• Morten Korch – Sin egen sti

• Date unknown – Thorvald Ellegaard wins gold in men's sprint at the 1911 UCI Track Cycling World Championships.

• A Victim of the Mormons, directed by August Blom^[2]

• 14 January – Clara Østø, actress (died 1983)
• 10 February – Einar Tang-Holbek, archer (died 2000)
• 20 February – Peter Glob, archaeologist (died 1985)

• 31 May – Else Jacobsen, swimmer (died 1965)
• 15 June – Grete Frische, actress, screenwriter and director (died 1962)
• 24 June – Helga Pedersen, politician (died 1980)

• 3 July – Jonas Bruun, lawyer (died 1977)
• 17 July – Anker Jacobsen, tennis player (died 1975)
• 8 August – Else Jarlbak, actress (died 1963)
• 31 October – Richard Olsen, rower (died 1956)
• 23 December – Niels Kaj Jerne, immunologist (died 1994)

• 3 February – Christian Bohr, physician (born 1855)
• 18 February – Emil Vett, businessman (born 1843)

• 14 June – Johan Svendsen, composer and conductor (born 1840 in Norway)
• 26 June – Vilhelm Bergsøem author and zoologist (born 1835)

• 23 July – Niels Viggo Ussing, mineralogist (born 1864)
• 12 September – Niels Andersen, businessman (born 1835)
• 19 September – Gustav Budde-Lund, zoologist (born 1846)

• 5 December – Edvard Petersen, painter (born 1841)