|Died 26 June 1923||Children Kinkazu Ōgimachi|
Ōgimachi Sanemasa (Japanese: 正親町実正) (July 20, 1855 – June 26, 1923) was a Japanese pharmacist and politician. He was Grand Chamberlain of Japan (1919–1922). He was the 10th governor of Saitama Prefecture (1899–1900). He was a recipient of the Order of the Sacred Treasure. He was made an earl in 1884, a recipient of the Order of the Rising Sun, 4th class in 1906, a recipient of the Order of the Sacred Treasure in 1910 and a recipient of the World War I Victory Medal in 1915.