← 1877 1876 1875 1878 in Denmark → 1879 1880 1881
Decades:	1850s 1860s 1870s 1880s 1890s
See also:	Other events of 1878 List of years in Denmark

Events from the year1878 inDenmark.

• Monarch –Christian IX^[1]
• Prime minister –J. B. S. Estrup

• 3–9 July – The11th Scandinavian Scientist Conference is held in Copenhagen.
• 9 May – Thepanserbatteri Helgoland is launched.
• 21 December –Princess Thyra of Denmark is wed toErnest Augustus, Crown Prince of Hanover in Copenhagen. The couple continue toFredensborg Palace after the wedding ceremony.

• 1 January –Agner Krarup Erlang, mathematician, statistician and engineer
• 6 January –Adeline Genée, Danish-British ballet dancer (died1970)
• 13 March –Lau Lauritzen Sr., film director, screenwriter and actor (died1938)
• 11 April –Holger-Madsen, actor (died1943)
• 17 March –Gudmund Nyeland Brandt, landscape architect (died1945)

• 30 July –Jørgen Skafte Rasmussen, businessman, company founder (died1964)
• 2 August –Princess Ingeborg of Denmark, duchess of Västergötland (died1958 in Sweden)
• 25 September –Holger Thiele, astronomer (died1946)

• 9 November –Povl Baumann, architect (died1963)
• 24 December –Thomas Madsen-Mygdal, politician, former Danish prime minister (died1943)

• 6 March –Harald Jerichau, painter (born1851)
• 4 December –David B. Adler, businessman (born1826)

• 1878 in Denmark
• 1870s in Denmark
• 1878 by country
• Years of the 19th century in Denmark

• Articles with short description
• Short description is different from Wikidata
• Use dmy dates from April 2018