Castilian War (disambiguation)

Castilian War may refer to:
 * Castilian war of succession (1282–1304) between Sancho IV of Castile and the Infantes de la Cerda
 * Castilian Civil War (1351–1369) between Peter of Castile and Henry II of Castile
 * War of the Two Peters (1356–1375) between Peter of Castile and Peter IV of Aragon
 * War of the Castilian Succession, or Castilian War of Succession (1475–1479) between Isabella I of Castile and Joanna la Beltraneja
 * Revolt of the Comuneros, or Castilian War of the Communities (1520–1) between Castilian Comuneros rebels and Castilian Royalists
 * Castilian War, or Spanish Expedition to Borneo (1578) between the Spanish Empire and the Bruneian Empire