The Siege of Nicaea took place in 1097 as part of the First Crusade.
Siege of Nicaea may also refer to:
- Siege of Nicaea (727), part of the Arab–Byzantine Wars
- Siege of Nicaea (1113), part of the Byzantine–Seljuk Wars
- Siege of Nicaea (1328–1331), part of the Byzantine–Ottoman Wars
This disambiguation page lists articles associated with the title Siege of Nicaea.
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