A flotilla leader was a small warship, especially prominent in early 20th century navies, suitable for commanding a flotilla of destroyers or other small warships, typically a small cruiser or a large destroyer. The flotilla leader provided space, equipment and staff for the flotilla commodore, including a wireless room, senior engineering and gunnery officers, and administrative staff to support the officers. Originally, the fastest light or scout cruisers available were often used, often having been specially designed for the role.