Events from the year 1540 in Sweden

• Monarch – Gustav I

• 4 January - Prince Erik is officially greeted as heir to the throne by nobility and bishops in Örebro.
• January - The reformers Olaus Petri and Laurentius Andreae are sentenced to treason but pardoned.
• - The first Evangelic mass is held in Vadstena Abbey.
• - Georg Norman inspects the churches in Västergötland and Östergötland, confiscates superfluous church valuables and registers dissident priests.

• November - Princess Cecilia of Sweden, princess (died 1627)
• - Abraham Angermannus, archbishop (died 1607)