Herm is one of the Channel Islands and part of the Parish of St Peter Port in the Bailiwick of Guernsey. It is located in the English Channel, north-west of France and south of England. It is 2,183 m (7,162 ft) long and under 873 metres (2,864 ft) wide; oriented north–south, with several stretches of sand along its northern coast. The much larger island of Guernsey lies to the west, Jersey lies to the south-east, and the smaller island of Jethou is just off the south-west coast.

The Channel Islands are an archipelago in the English Channel, off the French coast of Normandy. They are divided into two Crown Dependencies: the Bailiwick of Jersey, which is the largest of the islands; and the Bailiwick of Guernsey, consisting of Guernsey, Alderney, Sark, Herm and some smaller islands. Historically, they are the remnants of the Duchy of Normandy. Although they are not part of the United Kingdom, the UK is responsible for the defence and international relations of the islands as it is for the other Crown Dependency, the Isle of Man, and the British Overseas Territories. The Crown Dependencies are neither members of the Commonwealth of Nations, nor part of the European Union. They have a total population of about 171,916, and the bailiwicks' capitals, Saint Helier and Saint Peter Port, have populations of 33,500 and 18,207 respectively.