Events from the year 1921 in Sweden

• Monarch – Gustaf V
• Prime Minister – Gerhard Louis De Geer, Oscar von Sydow, Hjalmar Branting

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• 30 January – IFK Uppsala defeats Berliner SC, 4–1, in front of 2 022 spectators at the Stockholm Stadium when the first ice hockey game in Sweden is played.^[1]
• 10–26 September – the 1921 Swedish general election, which was the first Swedish election held under universal suffrage. The first women are elected to the parliament: Nelly Thüring (Social Democrat), Agda Östlund (Social Democrat) Elisabeth Tamm (liberal) and Bertha Wellin (Conservative) in the Lower chamber, and Kerstin Hesselgren in the Upper chamber.
• Foundation of Svenska Kvinnors Medborgarförbund.

• 3 January – Gunnar Eriksson, cross country skier (died 1982).^[2]
• 22 February – Sune Andersson, footballer (died 2002).^[3]
• 29 April – Bert Lundin, union leader (died 2018)
• 13 July – Git Gay, actress, singer and revue director (died 2007).
• 31 July – Tore Sjöstrand, runner (died 2011).^[4]
• 3 August – Birgitta Arman, actress (died 2007).
• 15 September – Nils Rydström, fencer (died 2018)
• 6 October – Egon Jönsson, footballer (died 2000).

• 11 March – Hulda Lundin, tailor and educator (born 1847)
• 20 November – Christina Nilsson, Countess de Casa Miranda, operatic soprano (born 1843)
• – Ellen Bergman, musician (born 1842)
• – Lilly Engström, civil servant (born 1843)
• - Hilda Sandels, opera singer (born 1830)