莱达湾是南极洲的海湾，位于玛丽伯德地，处于格兰特岛北部，长22公里，该海湾在1962年2月4日由美国海军破冰船发现，以船上的司务长命名。

Ledda Bay (74°23′S 131°20′W / 74.383°S 131.333°W / -74.383; -131.333) is a shallow embayment or bight, 12 nautical miles (22 km) long, in the north side of Grant Island, off the coast of Marie Byrd Land, Antarctica. It was discovered and first charted from the USS Glacier (AGB-4) (Captain Edwin A. McDonald) on February 4, 1962, and was named for R.J. Ledda, quartermaster aboard the Glacier on the cruise in which the bay was discovered.