These are the collective events from the 18th century of the year 1806 in Sweden.

• Monarch – Gustav IV Adolf

• 6 November - Swedish defeat at Lübeck in the Franco-Swedish War.
• - The constructing of the Södertälje Canal begun.
• - The Royal Swedish Opera and the Royal Swedish Ballet are closed down by the King and remain closed until 1809.^[1]
• - The steam engine is introduced in Stockholm at the Eldkvarn gristmill.^[2]
• - Helena Ekblom becomes active as a preacher.

• 22 January - Ludvig Manderström, Swedish - Norwegian Minister of State for Foreign Affairs (died 1873)
• 1 July - Clara Bonde, courtier (died 1899)
• 14 August - Cecilia Fryxell, educator (died 1883)
• 4 November - Anders Selinder, ballet master (died 1874)
• Marie Kinnberg, photographer and painter (died 1858)

• 22 August - Conrad Quensel, naturalist (born 1767)
• - Christina Krook, educator (born 1742)