Masayuki Okamoto (岡本 将之, Okamoto Masayuki, born 18 September 1983) is a former sumo wrestler and current professional wrestler from Chōyō, Kumamoto, Japan. In sumo, he used the shikona Kirinowaka Tarō (霧の若 太郎, Kirinowaka Tarō), while in professional wrestling he is known by the ring name Shogun Okamoto (将軍岡本, Shōgun Okamoto).