Mochizuki Keisuke (望月 圭介; 1 April 1867 – 1 January 1941) was a Japanese politician active during the Taishō and early Shōwa periods. He served twice as Minister of Communications (1927–1928, 1935–1936) and once as Minister of Home Affairs (1928–1929). In the latter position, he oversaw increased prosecution of members of the Japanese Communist Party under the Peace Preservation Law.
Source: “Mochizuki Keisuke”, English Wikipedia (CC BY-SA 4.0), excerpt