Rebellion may refer to:
- Revolts that arise in provinces with revolt risk
- Led by landless peasants, nationalists, zealots, or heresiarchs
- A war declared by a vassal on a liege
- Factions that have gone to war for their demands
- Overthrow ruler wars declared to escape imprisonment or refuse title revocation
- Players can directly declare some wars against their liege
- A war declared by a liege on a vassal
- Plot to revoke vassal title usually results in such a war