1866 in Norway

Events in the year 1866 in Norway.

Incumbents

Monarch: Charles IV.{{cite encyclopedia|title=Karl 4. |first1=Lars Roar |last1=Langslet |author1-link=Lars Roar Langslet |first2=Magnus A. |last2=Mardal |encyclopedia=Store norske leksikon |editor-last=Bolstad | editor-first=Erik |publisher=Norsk nettleksikon |location=Oslo |url=https://snl.no/Karl_4._-_av_Norge_og_Sverige |language=no |access-date=3 January 2024}}

5 March – The official inauguration of the Parliament of Norway Building ({{langx|no|Stortingsbygningen}}).
12–13 July – The town of Drammen is destroyed by fire, with the flames visible from Christiana (now Oslo) 36 km (22 mi) away.Tingle, Joseph Child (25 August 1866). [https://babel.hathitrust.org/cgi/pt?id=inu.30000080759727&view=1up&seq=158 "A Town in Ashes"]. All the Year Round. XVI (383). London: 150–153.
Murray, John (1869). [https://www.google.com/books/edition/The_Knapsack_Guide_to_Norway/zP9WAAAAcAAJ?hl=en&gbpv=1 The Knapsack Guide to Norway]. London: J. Murray. p. 103.

5 January – Johan Gjøstein, educator, newspaper editor and politician (died 1935).{{cite encyclopedia|title=Johan Gjøstein |first1= |last1= |first2= |last2= |encyclopedia=Store norske leksikon |editor-last=Bolstad | editor-first=Erik |publisher=Norsk nettleksikon |location=Oslo |url=https://snl.no/Johan_Gjøstein |language=no |access-date=22 November 2023}}
21 January – Olaus Alvestad, educator and newspaper editor (died 1903)
22 January – Sigurd Høst, educator (died 1939).{{cite encyclopedia|title=Sigurd Høst |first= |last= |encyclopedia=Store norske leksikon |editor-last=Bolstad | editor-first=Erik | editor-link= |publisher=Norsk nettleksikon |location=Oslo |url=https://snl.no/Sigurd_Høst |language=no |access-date=9 April 2025}}
15 March – Johan Vaaler, inventor (died 1910)
25 April – Aasulv Olsen Bryggesaa, politician and Minister (died 1922)
29 April – Kristian Prestgard, editor of Decorah-Posten (died 1946)
10 May – Thorolf Holmboe, painter (died 1935)
24 June – Peter Karl Holmesland, jurist and politician (died 1933)

10 July – Sigurd Eldegard, actor and playwright (died 1950).{{cite encyclopedia|title=Sigurd Eldegard |first=Alfred |last=Fidjestøl |encyclopedia=Store norske leksikon |editor-first=Erik | editor-last=Bolstad |publisher=Norsk nettleksikon |location=Oslo |url=https://snl.no/Sigurd_Eldegard |language=no |accessdate=8 February 2025}}
29 July – Jens Zetlitz Monrad Kielland, architect (died 1926)
12 August – Johan Opsahl, politician
2 September – August Herman Halvorsen, politician (died 1929)
13 September – Ole Østmo, rifle shooter and Olympic medallist (died 1923)
28 October – Peter Collett Solberg, businessperson and politician (died 1934)
1 November – Betzy Kjelsberg, politician and feminist (died 1950)
29 November – Johan Friele, sailor and Olympic gold medallist (died 1927)
2 December – Ingvald Anker Andersen, politician

Simon Christian Hammer, writer and journalist (died 1932)
Jenova Martin, suffragist and writer (died 1937){{cite web|last1=Cudmore|first1=Victoria|title=Biographical Sketch of Jenova Martin |url=https://documents.alexanderstreet.com/d/1010596240|website=Alexander Street|access-date=21 September 2024}}
Sigbjørn Obstfelder, writer (died 1900)