Morgan Island is a small island which is the largest feature in a group of islands located 1 nautical mile (2 km) east of Cape Bidlingmaier, off the north side of Heard Island in the Indian Ocean. The island group was charted as extending across "Morgan Bay" on an 1860 sketch map compiled by Captain H.C. Chester, an American sealer, and "Morgan Islands" appears on the 1874 chart and the scientific reports of a British expedition under George Nares in HMS Challenger.