← 1850 1849 1848 1851 in Norway → 1852 1853 1854
Centuries:	17th 18th 19th 20th 21st
Decades:	1830s 1840s 1850s 1860s 1870s
See also:	1851 in Sweden List of years in Norway

Events in the year 1851 in Norway.

• Monarch: Oscar I.^[1]

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• 10 January – The Norwegian Booksellers Association (Den Norske Bokhandlerforening) is founded.^[2]

• 2 January – Haldor Boen, teacher and politician in America (died 1912)
• 25 January – Arne Garborg, writer (died 1924)
• 28 January – Andreas Aubert, art historian (died 1913)
• 12 February – Randi Blehr, women’s rights activist (died 1928).^[3]
• 11 June – Oscar Borg, composer (died 1930)

• 23 July – Peder Severin Krøyer, painter (died 1909)
• 20 August – Abraham Berge, politician and Minister (died 1936)
• 23 September – Ola Thommessen, newspaper editor (died 1942)
• 2 October – Elias Sunde, politician and Minister (died 1910).^[4]
• 30 October – Leonhard Hess Stejneger, zoologist (died 1943)
• 10 November – Waldemar Christofer Brøgger, geologist and mineralogist (died 1940)
• 16 November – Valborg Seeberg, writer (died 1929)^[5]
• 25 November – Hans Andersen Foss, author, newspaper editor and temperance leader in America (died 1929)

• Gunvald Aus, engineer (died 1950)
• Peter W. K. Bøckman, Sr., bishop and theologian (died 1926)
• Nicolai A. Grevstad, diplomat, politician and newspaper editor in America (died 1940)
• Knut Eriksson Helland, Hardanger fiddle maker (died 1880)
• Herman Jeremiassen, ship-owner and politician (died 1943)
• Carl Sofus Lumholtz, discoverer and ethnographer (died 1922)
• Olaj Olsen, jurist and politician (died 1920)
• August Geelmuyden Spørck, politician and Minister (died 1928)
• Oscar Sigvald Julius Strugstad, politician and Minister (died 1919)
• Aasmund Halvorsen Vinje, politician and Minister (died 1917)

• 5 July – Olaus Michael Schmidt, judge and politician (born 1784)

• Palle Rømer Fleischer, politician and Minister (born 1781)
• Hilmar Meincke Krohg, politician (born 1776)