Rudolph Francis King (November 2, 1887 – September 10, 1961) was an American politician who served as a member of the Massachusetts House of Representatives from 1937 to 1944 and was House Speaker from 1943 to 1944. Born in , he had previously served as a member of the School Committee, Board of Assessors, and the Board of Health and Cemeteries and was the town moderator and chairman of the board of selectmen in Millis, Massachusetts. King was an unsuccessful candidate for a seat on the Governor's Council during the 1958 election. King died on September 10, 1961, in Millis, Massachusetts.