1840 in Norway

• Monarch: Charles III John.{{cite encyclopedia|title=Karl Johan |first=Magnus A. |last=Mardal |encyclopedia=Store norske leksikon |editor-last=Bolstad | editor-first=Erik |publisher=Norsk nettleksikon |location=Oslo |url=https://snl.no/Karl_Johan |language=no |access-date=18 December 2023}}

• Melhus Sparebank was established, it is one of Norway’s oldest savings banks.

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• 3 January – Cathinka Guldberg, Norway's first nurse (d.1919)
• 14 February – Lars Olsen Skrefsrud, missionary and language researcher in India (d.1910)
• 30 September – Johan Svendsen, composer, conductor and violinist (d.1911)
• 7 November – H. G. Haugan, Norwegian-born American railroad executive.

• Karl Akre, politician
• Anton Christian Bang, politician (d.1913)
• Hans Laurits Olsen Hammerstad, politician
• Anders Sveaas, businessperson and consul (d.1917)

• 28 August – Caspar Peter Hagerup, civil servant (b.1777)

• Even Hansen, civil servant and politician (born 1790)
• Mads Lauritz Madsen, politician (born 1782)
• Peder Paulsen Balke, farmer and politician (born 1779).{{cite encyclopedia|title=Peder Paulsen Balke

|last= |first=

|encyclopedia=Store norske leksikon

|editor-last=Godal | editor-first=Anne Marit | editor-link=Anne Marit Godal |publisher=Norsk nettleksikon

|location=Oslo |url=http://www.snl.no/Peder_Paulsen_Balke|language=Norwegian|accessdate=29 October 2012}}

{{Portal bar|Norway|History|Lists}}

{{Reflist}}

{{Years in Norway during the union with Sweden nav}}

{{Year in Europe|1840}}