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← 1865 1864 1863 1866 in Denmark → 1867 1868 1869
Decades:	1840s 1850s 1860s 1870s 1880s
See also:	Other events of 1866 List of years in Denmark

Events from the year1866 inDenmark.

• Monarch –Christian IX^[1]
• Prime minister –C. E. Frijs

• 22 August –SS Ottawa departs from Copenhagen as the first emigration ship between Copenhagen and New York City.
• 7 September – The engagement ofPrincess Dagmar andGrand Duke Alexander Alexandrovich is celebrated at the royal court atChristiansborg Palace.^[2]
• 22 September – Princess Dagmar leaves Copenhagen on board the steam shipSlesvig.^[2]
• 20 October –Københavns Roklub is founded.

• 1 January –Peter Elfelt, photographer (died1931)
• 19 January –Carl Theodor Zahle, politician (died1946)
• 16 February –Charles Brun, politician (died1919)
• 25 February –Hans Peter Prior, industrialist (died1936)

• 5 May –Thomas B. Thrige, industrialist (died1938)
• 19 June –Sabine Helms, botanist (died 1929)

• 3 July –Albert Gottschalk, painter (died1906)
• 15 July –Adolph Jensen, economist and statistician (died1948)
• 31 August –Georg Jensen, goldsmith, designer (died1935)

• 6 October –Nina Bang, politician (died1928)
• 19 November –Georg Carl Amdrup, admiral, polar explorer (died1947)
• 7 December –Magnus Bech-Olsen, wrestler and circus manager (died1932)
• 18 December –Holger Nielsenm, fencer (died1955)

• 7 May –Benjamin Wolff, businessman, landowner and art collector (born1790)
• 8 April –Hans Puggaard, businessman (born1788)
• 6 November –Christian Albrecht Bluhme, politician, prime minister of Denmark (born1794)

• 1866 in Denmark
• 1860s in Denmark
• 1866 by country
• Years of the 19th century in Denmark

• CS1 Danish-language sources (da)
• Articles with short description
• Short description is different from Wikidata
• Articles needing additional references from November 2019
• All articles needing additional references
• Use dmy dates from April 2018