Ota Masahiro (Japanese: ????) (November 16, 1871 – January 24, 1951) was the 14th Governor-General of Taiwan (1931–1932).
He was Governor of Fukushima Prefecture (1913–1915), Ishikawa Prefecture (1915–1916), Kumamoto Prefecture (1916–1919), Niigata Prefecture (1919–1923) and Aichi Prefecture (1923–1924).