Siege of Åbo (1563)

Siege of Åbo
Part of the conflicts between Eric XIV and John III
DateSummer 1563 – August 12, 1563
Location
Åbo (Turku), Finland, Kingdom of Sweden
60°27′06″N 22°16′01″E / 60.4517°N 22.2669°E / 60.4517; 22.2669
Result Victory for Eric XIV
Territorial
changes
Åbo is captured by the royal army
Belligerents
Forces under Eric XIV Forces under Duke John
Commanders and leaders
Eric XIV
Klaus Fleming
Henrik Klasson Horn
Duke John (POW)
Catherine Jagiellon (POW)
Klas Andersson 
Units involved
Unknown Åbo garrison
Strength
Several thousand 1,200 in the beginning
350 in the end
Casualties and losses
Unknown 850 killed or deserted

The siege of Åbo (1563) was a siege of Åbo (Turku) by the royal army under King Eric XIV of Sweden against his brother Duke John of Finland (later King John III) in 1563.