| Cooper Island | |
| Coordinates: | -54.8°N -82°W |
| Archipelago: | South Georgia |
| Length Mi: | 2 |
| Elevation Ft: | 1365 |
| Population: | 0 |
| Country Admin Divisions Title: | Overseas Territory |
| Country Admin Divisions: | South Georgia and the South Sandwich Islands |
Cooper Island is a small island, 2miles long, which lies at the north side of the entrance to Drygalski Fjord, off the southeast end of South Georgia. It was discovered by a British expedition under James Cook in 1775, and named for Lieutenant Robert Palliser Cooper, an officer aboard HMS Resolution.
A navigable channel, Cooper Sound, nearly 1miles wide, separates Cooper Island from the coast of the main island of South Georgia. There is a small bay, Known as Cooper Bay, 1.3miles southwest of Cape Vahsel on the mainland, and 1miles northwest of Cooper Island, indenting the southeast end of South Georgia, which derives its name from Cooper Island.
The island reaches 13650NaN0 at its highest point, and the upper parts of the island are above the snow line.
As one of a handful of rat-free islands, Cooper Island is South Georgia's only Special Protection Area, it has large numbers of sea birds including snow petrels, Antarctic prions, 12,000 pairs of black-browed albatross, chinstrap penguins and 20,000 macaroni penguins. There are also a number of fur seals and this is one of the few places where they were not hunted by humans.
The island is covered in tussock grass.