Calf of Man is a 2.50-square-kilometre (618-acre) island, off the southwest coast of the Isle of Man. It is separated from the Isle of Man by a narrow stretch of water called the Calf Sound.

The Isle of Man or Mann, is a self-governing British Crown Dependency in the Irish Sea, between Great Britain and Ireland. It is recognized as one of the Celtic nations, and is the homeland of the Manx people, a Celtic ethnic group. As head of state, Charles III holds the title Lord of Mann and is represented by a Lieutenant Governor. The government of the United Kingdom is responsible for the isle's military defence and represents it abroad.