King Haakon Bay, or King Haakon Sound, is an inlet on the southern coast of the island of South Georgia. The inlet is approximately 8 miles (13 km) long and 2.5 miles (4 km) wide.
The inlet was named for King Haakon VII of Norway by Carl Anton Larsen the founder of Grytviken. Queen Maud Bay, named for his queen, is nearby.
Cave Cove, which forms part of the bay, is best known as the landing place of Ernest Shackleton in May 1916 as he sought help for his shipwrecked crew marooned in the Antarctic with the Imperial Trans-Antarctic Expedition. They also camped at Peggotty Bluff in the bay.