Reid Island is an island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

 at the east side of the entrance to Iceberg Bay

Iceberg Bay

Iceberg Bay is a bay 3 miles wide, which indents the south coast of Coronation Island between Cape Hansen and Olivine Point, in the South Orkney Islands. Named by Matthew Brisbane, who roughly charted the south coast of Coronation Island under the direction of James Weddell in 1823....

, along the south coast of Coronation Island

Coronation Island

Coronation Island is the largest of the South Orkney Islands, long and from wide. The island extends in a general east-west direction, is mainly ice-covered and comprises numerous bays, glaciers and peaks, the highest rising to...

 in the South Orkney Islands

South Orkney Islands

The South Orkney Islands are a group of islands in the Southern Ocean, about north-east of the tip of the Antarctic Peninsula. They have a total area of about ....

. The name "Reidholmen" appears in this location for a small group of islands on a chart drawn by Captain Petter Sorlle in 1912-13. Survey by the Falkland Islands Dependencies Survey (FIDS) in 1948-49 determined that only a single island exists.