Rear Admiral Roger Charles Dimmock CB (born 27 May 1935) is a former Royal Navy officer who became Naval Secretary. Educated at Price's School, Dimmock joined the Royal Navy in 1953 and specialised in naval aviation. He commanded the frigates HMS Berwick and HMS Naiad. He was appointed Chief Staff Officer to the Flag Officer, Carriers and Amphibious Ships in 1978 and given command of RNAS Culdrose in 1980 before taking command of the aircraft carrier HMS Hermes in 1982. He went on to be Director of Naval Air Warfare at the Ministry of Defence in 1983, Naval Secretary in 1985 and Flag Officer, Naval Air Command in 1987. He retired in 1989.