20 March - Linköping Bloodbath conducted against the Sigismund loyalists.
- The immigration of Walloons to Sweden begins.
The War against Sigismund becomes the Polish–Swedish War (1600–11).
4 March - Hans Christoff von Königsmarck, soldier (died 1663)
Unknown date - Margareta Slots, royal mistress (died 1669)
19 May - Gustaf Banér, privy Councillor (born 1547)
1600 in Sweden Wikipedia
Events from the year 1600 in Sweden