{{short description|none}} <!-- "none" is preferred when the title is sufficiently descriptive --> {{Use dmy dates|date=April 2018}} {{Year in Denmark|1878}} Events from the year '''1878 in Denmark'''.
==Incumbents== * Monarch – Christian IX<ref>{{cite web|title=Christian IX: king of Denmark|url=https://www.britannica.com/biography/Christian-IX|website=Encyclopedia Britannica|access-date=17 June 2019|language=en}}</ref> * Prime minister – J. B. S. Estrup
==Events== thumb|9 May: The ''panserbatteri'' Helgoland is launched.. [[File:Det hele Brudepars Afreise til Fredensborg efter Formælingen den 21de December.jpg|thumb|21 December: Thyra and Ernst August continues to Fredensborg Palace after their wedding ceremony.]] * 3{{ndash}}9 July {{ndash}} The 11th Scandinavian Scientist Conference is held in Copenhagen. * 9 May {{ndash}} The ''panserbatteri'' Helgoland is launched. * 21 December {{ndash}} Princess Thyra of Denmark is wed to Ernest Augustus, Crown Prince of Hanover in Copenhagen. The couple continue to Fredensborg Palace after the wedding ceremony.
==Culture== ===Theatre, opera and ballet=== * 25 September {{ndash}} The opera ''Drot og marsk'' is first performed at the Rotal Danish Theatre in Copenhagen.
==Births== ===January{{ndash}}March=== * 1 January – Agner Krarup Erlang, mathematician, statistician and engineer * 6 January – Adeline Genée, Danish-British ballet dancer (died 1970) * 10 February {{ndash}} Johannes Berggreen, businessman (died 1963) * 13 March – Lau Lauritzen Sr., film director, screenwriter and actor (died 1938) * 11 April – Holger-Madsen, actor (died 1943) * 17 March {{ndash}} Gudmund Nyeland Brandt, landscape architect (died 1945)
===July{{ndash}}September=== * 30 July {{ndash}} Jørgen Skafte Rasmussen, businessman, company founder (died 1964) * 2 August – Princess Ingeborg of Denmark, duchess of Västergötland (died 1958 in Sweden) * 25 September {{ndash}} Holger Thiele, astronomer (died 1946)
===October{{ndash}}December=== * 9 November {{ndash}} Povl Baumann, architect (died 1963) * 24 December – Thomas Madsen-Mygdal, politician, former Danish prime minister (died 1943)
==Deaths== * 6 March {{ndash}} Harald Jerichau, painter (born 1851) * 4 December {{ndash}} David B. Adler, businessman (born 1826)
==References== {{reflist}}
{{Denmark year nav}} {{Year in Europe|1878}}
{{DEFAULTSORT:1878 In Denmark}} Category:1878 in Denmark Category:1870s in Denmark Denmark Category:Years of the 19th century in Denmark