Sieges of Constantinople
Learn more about Sieges of Constantinople
- For the final siege of Constantinople, see Fall of Constantinople
There were numerous sieges of Constantinople during the history of the Byzantine Empire. Two sieges resulted in the capture of Constantinople: in 1204 by crusaders, and in 1453 by the Ottoman Empire under Mehmed II.
 Persian and Arab Sieges of Constantinople
- The First Siege of Constantinople by Avars and Sassanid Persians in 626
- The First Arab Siege in 674-678
- The Second Arab Siege in 717-718
 Sieges by the Bulgars and Rus'
- An attack by soldiers of the First Crusade in 1097
- The siege and capture of Constantinople during the Fourth Crusade in 1204
 Ottoman Sieges
- The First Ottoman Siege in 1396
- The Second Ottoman Siege in 1422
- The Third Ottoman Siege and Fall of Constantinople in 1453