Events from the year 1771 in Sweden

• Monarch – Adolf Frederick then Gustav III

• 12 February – Adolf Frederick, King of Sweden dies, and are succeeded by Gustav III of Sweden (at the time on a visit to France).
• 1 March - The news of the King's death reach Gustav III of Sweden in Paris.
• 30 May - Gustav III of Sweden returns to Sweden as monarch.
• 8 September – The Royal Swedish Academy of Music is created.
• - The Du Londel Troupe is dissolved.
• - Widespread famine in Sweden following a dry summer and then heavy rains during the late summer and fall, leading to widespread crop failures.^[1]
• - The first newspaper in the Swedish province of Finland, Tidningar utgifne af et Sällskap i Åbo.
• - Sweden and France creates an alliance.
• - Foundation of the Royal College of Music, Stockholm.
• - Foundation of the Royal Swedish Society of Naval Sciences.
• - The notorious thief Jacob Guntlack is executed in the capital in front of thousands of spectators.

• 23 January – Elisabeth Forsselius, actress (died 1850)
• Cajsa Wahllund, restaurateur (died 1843)
• Margareta Sofia Lagerqvist, actress and singer (died 1800)
• Marie Antoinette Petersén, musician (died 1855)
• Charlotta Roos, fortune teller and medium (died 1809)
• Anna Leonore König, singer (died 1854)
• Ulrika Åberg, ballerina (died 1852)

• Niclas Gustaf Duncan, spy (born 1711)
• - Jacob Guntlack, notorious thief (born 1744)
• - Brigitta Sahlgren, industrialist (born 1694)