John Harper Trumbull (March 4, 1873 – May 21, 1961) was an American politician who served as the 70th Governor of Connecticut.

Despite his name, he was not related to the previous governors of Connecticut of the same name, but was the son of Irish immigrants who moved to Ashford in the early 1870s to run a farm.

Trumbull had learned to pilot his own airplanes and was dubbed "The Flying Governor" because he often flew into Robertson Field Airport in Plainville.

During his terms in office, the government started a building program and worked at improving the roads of the State.

Organizer and president, Trumbull Electric Manufacturing Co.; board chairman, Colonial Air Transport, Inc.; director and treasurer, Plainville Realty Co.; president, Plainville Trust Co.; director, Connecticut Light & Power Co.; delegate to Republican National Convention from Connecticut, 1920 (alternate), 1924, 1928, 1932, and 1936.