Melville Island is a small peninsula in Nova Scotia, Canada, located in the Northwest Arm of Halifax Harbour, west of Deadman's Island. It is part of the Halifax Regional Municipality. The land is rocky, with thin, acidic soil, but supports a limited woodland habitat.
The site was discovered by Europeans in the 17th century, though it was likely earlier explored by aboriginals. It was initially used for storehouses before being purchased by the British, who built a prisoner-of-war camp to hold captives from the Napoleonic Wars and later the War of 1812. The burial ground for prisoners was on the adjacent Deadman's Island.
Later, Melville Island was used as a receiving depot for black refugees escaping slavery in the United States, then as a quarantine hospital for immigrants arriving from Europe (particularly Ireland). It briefly served as a recruitment centre for the British Foreign Legion during the Crimean War, and was then sold to the British for use as a military prison. In 1907 the land was granted to the Canadian government, which used it to detain German and Austro-Hungarian nationals during the First World War. During the Second World War, prisoners were sent to McNabs Island instead, and ammunition depots were kept on Melville Island.
The peninsula now houses the clubhouse and marina of the Armdale Yacht Club. Melville Island has been the subject of a number of cultural works, most of which concern its use as a prison.
Melville Island is part of the Halifax Regional Municipality, on the southeast coast of Nova Scotia. The peninsula lies on the eastern boundary of Melville Cove in the Northwest Arm, an inlet between the Halifax Peninsula and Mainland Halifax. It has a total area of approximately 2,000 square metres (22,000 sq ft). Melville Island is 200 metres (660 ft) west of Deadman's Island, and southeast of Regatta Point. The peninsula lies on a fracture zone trending northwest–southeast, and is located at the border between the Halifax Slate Formation and a granite-based formation. There is evidence of glacial scouring in the area. The surrounding seabed ranges from gravel to muddy gravel, and the shore is rocky.