The Battle of Selburg was fought during the Polish–Swedish War (1626–1629), between Sweden and the Polish–Lithuanian Commonwealth in September of 1626. The Polish forces under Aleksander Gosiewski managed to recapture Selburg (Polish sources: Zelbork) from the Swedes earlier in 1626 and stationed their troops in the castle. In response the Swedish general Jacob De la Gardie gathered his force to once again capture the town for the Swedes.