Events from the year 1544 in Sweden

• Monarch – Gustav I (1523 - 1560)

• January 13 - The Västerås arvförening declare Sweden to be a Hereditary monarchy, with the right of the eldest legitimate son to be heir to the throne and the younger sons to be Dukes. It is also officially declared a Protestant Kingdom: Requiem, the worship of saints and pilgrimages is banned, crucifixes is removed from the churches, and the opposition to the new religious order is declared heretics.
• - Olaus Magnus is appointed Catholic Arch Bishop of Sweden by the pope in his exile in Rome.
• The former nuns of the Skänninge Abbey are forcibly moved to Vreta Abbey.

• - Johannes Magnus, last Catholic archbishop (born 1488)