Captain Lockhart Leith CMG DSO NR was a British fencer an Royal Navy Officer. He was educated at Burney’s Royal Academy in Gosport, Hampshire, and joined HMS Britannia in 1890. He was promoted to lieutenant in 1898, commander in 1910, and captain in 1916. He served with distinction during World War I and was awarded the Distinguished Service Order in 1917 and appointed a Companion of the Order of St. Michael and St. George in the 1919 New Year Honours. He was awarded the Navy Cross from the United States in 1920 and retired from the navy in 1922.