Events from the year 1654 in Sweden.
Incumbents
Monarch - Christina then Charles X Gustav
Events
April - The 1654 Anglo-Swedish alliance is forged to offset the Danish-Dutch alliance. 6 June - Charles X Gustav succeeds his cousin Christina on the Swedish throne. After her abdication on the same day, Christina, now the former reigning queen of a Protestant nation, secretly converts to Catholicism. 24 October - The wedding between Charles X Gustav and Hedwig Eleonora of Holstein-Gottorp.
Births
23 May - Nicodemus Tessin the Younger, architect (died 1728) 6 October - Johan Peringskiöld, antiquarian (died 1720) Anna Lohe, banker (died 1731)
Deaths
25 January - Ebba Mauritzdotter Leijonhufvud, courtier (born 1595) 28 August - Axel Oxenstierna, politician (born 1583) Louise van der Nooth, courtier (born 1630s)