8th Submarine Flotilla

8th Submarine Flotilla
Active1912–15 January 1919
1939-1945
Country United Kingdom
Branch Royal Navy
SizeFlotilla
Part ofHome Fleet 1912-1919
Mediterranean, Indian Ocean and Pacific based commands 1939-1945

The 8th Submarine Flotilla was a flotilla of the British Royal Navy consisting of submarines and their supporting depot ships and destroyers. It was established as part of the Home Fleet in 1912. The flotilla brought together the newer, longer range 'overseas' submarines for the purpose of carrying out offensive operations. Composition of the flotilla varied over time. It was disestablished in 1919.

The flotilla was re-established in 1939 for service in the Second World War. It was disestablished again after the close of hostilities.