The Wager Mutiny took place in 1741, after the British warship HMS Wager was wrecked on a desolate island off the south coast of present-day Chile.

HMS Wager was a square-rigged sixth-rate Royal Navy ship of 28 guns. It was built as an East Indiaman in about 1734 and made two voyages to India for the East India Company before the Royal Navy purchased her in 1739. It formed part of a squadron under Commodore George Anson and was wrecked on the south coast of Chile on May 14th 1741. The wreck of Wager became famous for the subsequent adventures of the survivors who found themselves marooned on the desolate Wager Island in the middle of a Patagonian winter, and in particular because of the Wager Mutiny that followed.