Brigadier Hector Cyril Daniel CBE MC AFC (1898– 28 December 1953) was a South African military commander. He served in the Royal Air Force in World War I, becoming an ace with nine aerial victories, and joined the South African Air Force in 1923. He was Director of Air and Technical Services, i.e. head of the SAAF, from 1937 until the outbreak of World War II in 1939, when he was appointed Officer Commanding SAAF Headquarters.