Siege of Nicaea (disambiguation)

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