Sumter de Leon Lowry Jr. (August 27, 1893 – February 3, 1985) was an American insurance executive, National Guard officer, and political candidate from Florida. A veteran of the Pancho Villa Expedition, World War I, and World War II, he is best known for his service as commander of several units in the Florida National Guard. Lowry served in the military for 38 years and attained the rank of major general. Apart from his military service, he is remembered for his opposition to racial integration, on which he based his unsuccessful 1956 campaign for governor of Florida.