War of secession

War of secession may refer to:
 * War of independence, a military attempt by a rebel movement to have a territory break away (secede) from a sovereign state to form a new sovereign state in its own right
 * American Civil War (1861–1865), see also names of the American Civil War
 * Swedish War of Liberation (1521–1523), also known as the Swedish War of Secession or Gustav Vasa's Rebellion