Alderney (; ; Auregnais: Aoeur'gny) is the most northerly of the Channel Islands. It is part of the Bailiwick of Guernsey, a British Crown dependency. It is long and wide. The area is , making it the third-largest island of the Channel Islands, and the second largest in the Bailiwick. It is around to the west of La Hague on the Cotentin Peninsula, Normandy, in France, to the north-east of Guernsey and from the south coast of Great Britain. It is the closest of the Channel Islands to both France and the United Kingdom. It is separated from Cap de la Hague by the dangerous Alderney Race (French: Raz Blanchard).