The Conquest of Uppsala () was a part of the Swedish War of Liberation that took place on 19 May 1521. After defeating a Danish counter-attack outside Västerås, sent two of his military commanders, Jöns Olofsson and Lars Eriksson, to take control of the western province of Uppland. After passing through the hundreds of Simtuna and Torstuna, Jöns Olofsson was met by local Danish commander Bengt Bjugg and his forces, who defeated the rebels and killed Olofsson.