The Invergordon Mutiny was an industrial action by around 1,000 sailors in the British Atlantic Fleet that took place on 15–16 September 1931. For two days, ships of the Royal Navy at Invergordon were in open mutiny, in one of the few military strikes in British history.

The Atlantic Fleet was a naval fleet of the Royal Navy. It existed for two separate periods; 1909 until 1914, and then 1919 until 1932.