Events in the year 1917 in Norway.

• Monarch – Haakon VII.^[1]

• The Bratsberg Line began rail traffic between Eidanger and Notodden. The line was closed in 2001.

• 20 January – Gunnar Bøe, economist and politician (died 1989)
• 1 February – Tor Aspengren, trade unionist (died 2004)
• 2 March – Haakon Tranberg, sprinter (died 1991)
• 6 March – Paul Svarstad, politician (died 1998)
• 5 May – Aage Eriksen, wrestler and Olympic silver medallist (died 1998)^[2]
• 12 May – Johan Berg, military officer^[3] (died 1981)
• 16 May – Arne Røgden, bobsledder (died 2002)
• 17 May – Ragnvald Winjum, jurist and politician (died 1965)
• 25 May – Brynjulv Sjetne, politician (died 1976)
• 2 June – Sverre Bratland, military leader (died 2002)
• 14 June – Atle Selberg, mathematician (died 2007)
• 15 June – Einfrid Perstølen, psychiatrist and language proponent (died 2017)^[4]
• 3 July – Brita Collett Paus, humanitarian leader and founder of Fransiskushjelpen (died 1998)
• 18 July – Harald Nikolai Brøvig, politician (died 2010)^[5]
• 23 July – Knut Brynildsen, international soccer player (died 1986)
• 27 July – Guy Krohg, painter, illustrator and scenographer (died 2002).^[6]
• 12 August – Ebba Haslund, novelist, short story writer, playwright, essayist, children's writer, literary critic, radio speaker and politician (died 2009)
• 13 August – Lulla Einrid Fossland, politician (died 2009)
• 3 September – Bjarne Hanssen, politician (died 2014)
• 23 September – Knut Haugland, resistance fighter and explorer (died 2009)
• 26 September – Åslaug Linge Sunde, politician (died 2006)
• 3 October – Odd Lundberg, speed skater and Olympic silver medallist (died 1983)
• 7 October – Godtfred Holmvang, decathlete and skier (died 2006)
• 16 October – Aasmund Brynildsen, essayist, biographer, magazine editor and publishing house consultant (died 1974)
• 26 October – Kaare Steel Groos, politician (died 1994)
• 5 November – Jens Evensen, lawyer, judge, politician and Minister (died 2004)
• 18 November – Ragnar Kvam, journalist, novelist, translator and literary critic (died 2006)^[7]
• 30 November – Arne Konrad Eldegard, banker and politician (died 2018)
• 5 December – Wenche Foss, actress (died 2011)
• 13 December – Jan Baalsrud, resistance member (died 1988)
• 15 December – Gregers Gram, resistance fighter and saboteur (died 1944)
• 19 December – Olaf Dufseth, Nordic combined and cross-country skier (died 2009)
• 23 December – Eivind Sværen, shot putter (died 1986)

• 26 January – Oluf Iversen, politician (born 1847)
• 1 February – Georg Andreas Bull, architect and chief building inspector (born 1829)
• 17 March – Cæsar Peter Møller Boeck, dermatologist (born 1845)
• 16 May – Ole Olsen Malm, physician, veterinarian, civil servant and politician (b. 1854).^[8]
• 15 June – Kristian Birkeland, scientist (born 1867)
• 18 June – Oscar Ambrosius Castberg, painter and sculptor (born 1846)
• 19 June – Johan Gerhard Theodor Ameln, politician (born 1838)
• 4 August – Kristian Birch-Reichenwald Aars, academic (born 1868)
• 20 September – Einar Sundt, businessman, writer and publisher (born 1854).^[9]