The Siege of Antioch takes place during the First Crusade in 1097 and 1098.

The first siege, by the crusaders against the Muslim-held city, lasts from October 21, 1097 to Jun 2, 1098.

Antioch lies on the crusaders' route to Palestine, and anticipating that it will be attacked the Muslim governor of the city, Yaghi-Siyan, begins stockpiling food and sending requests for help.

The Byzantine walls surrounding the city present a formidable obstacle to its capture, so the leaders of the crusade decide to besiege Antioch.The crusaders arrive outside the city on October 21 and begin the siege.

The garrison sorties unsuccessfully on December 29.

After stripping the surrounding area of food, the crusaders are forced to look farther afield for supplies, opening themselves to ambush and while searching for food on December 31, a force of 20,000 crusaders encounters a relief force led by Duqaq of Damascus heading to Antioch and defeats the army.

However, supplies dwindle and in early 1098 one in seven of the crusaders is dying from starvation and people begin deserting in January.A second relief force, this time under the command of Ridwan of Aleppo, advances towards Antioch, arriving on February 9.

Like the army of Duqaq before, it is defeated.

Antioch is captured on June 3, although the citadel remains in the hands of the Muslim defenders.

Kerbogha begins the second siege, against the crusaders who had occupied Antioch, which lasts from June 7 to June 28, 1098.

The second siege ends when the crusaders exit the city to engage Kerbogha's army in battle and succeeds in defeating them.

On seeing the Muslim army routed, the defenders remaining in the citadel surrender.