The Siege of Olomouc took place in 1758 when a Prussian

Kingdom of Prussia

The Kingdom of Prussia was a German kingdom from 1701 to 1918. Until the defeat of Germany in World War I, it comprised almost two-thirds of the area of the German Empire...

 army led by Frederick the Great besieged the Austrian city of Olomouc

Olomouc

Olomouc is a city in Moravia, in the east of the Czech Republic. The city is located on the Morava river and is the ecclesiastical metropolis and historical capital city of Moravia. Nowadays, it is an administrative centre of the Olomouc Region and sixth largest city in the Czech Republic...

 during the Prussian invasion of Moravia

Moravia

Moravia is a historical region in Central Europe in the east of the Czech Republic, and one of the former Czech lands, together with Bohemia and Silesia. It takes its name from the Morava River which rises in the northwest of the region...

 in the Seven Years' War

Seven Years' War

The Seven Years' War was a global military war between 1756 and 1763, involving most of the great powers of the time and affecting Europe, North America, Central America, the West African coast, India, and the Philippines...

. The attempt stalled as the besiegers faced stronger resistance than Frederick had expected. With a lack of supplies and the approach of an Austrian relief force following the Battle of Domstadtl

Battle of Domstadtl

The Battle of Domstadtl, also spelled Domstadt, Czech Domašov, was a battle between Habsburg Monarchy and Kingdom of Prussia at a Moravian village Domašov nad Bystřicí during the Seven Years' War on 30 June 1758, preceded by a minor clash at Guntramovice on 28 June...

, Frederick abandoned the siege and withdrew from Moravia.