The Spithead and Nore mutinies were two major mutinies by sailors of the Royal Navy in 1797. They were the first in an increasing series of outbreaks of maritime radicalism in the Atlantic World. Despite their temporal proximity, the mutinies differed in character. The Spithead mutiny was a simple, peaceful, successful strike action to address economic grievances, while the Nore mutiny was a more radical action, articulating political ideals as well, which failed.
The mutinies were extremely concerning for Britain, because at the time the country was at war with Revolutionary France, and the Navy was the main component of the war effort.