an inlet of the Pacific Ocean, on the western coast of Vancouver Island, British Columbia, Canada, some 168 miles (270 km) northwest of Victoria. The sound, which forms a good harbour, is 6 miles (10 km) wide and has three arms, one of which separates Nootka Island from Vancouver Island.

Captain James Cook (Cook, James) visited the sound in 1778. He called it King George's Sound, then renamed it Nootka Sound, believing that to be its Indian name.