Masahide Ota (?? ??, Ota Masahide, 12 June 1925 – 12 June 2017) was a Japanese academic and politician who served as the governor of Okinawa Prefecture from 1990 until 1998.
After starting his career as a professor at the University of the Ryukyus, he wrote books in English and Japanese, mostly about the Battle of Okinawa and Japan–United States bilateral relations following World War II.
After his retirement as professor he was elected as governor and was best known for his strong stand against occupation of prefectural lands by military bases of United States, going against the Japanese central government at the time.