The Åbo Bloodbath (Swedish: Åbo blodbad; Finnish: Turun verilöyly) of 10 November 1599 was a public execution in the Finnish town of Turku (Åbo), then part of the Kingdom of Sweden, in the context of the War against Sigismund and the Club War. Sweden was by then in the final phase of a civil war, with one faction supporting king Sigismund III Vasa, who also was king and Grand Duke of Poland–Lithuania, and another faction supporting duke Charles of Södermanland, the later Charles IX, Sigismund's paternal uncle. After winning the upper hand in the dispute, Charles crushed the last resistance to his rule, particularly in Finland, while Sigismund had already retreated to Poland.