Richard Theodore Pennefather (c.1828 – 27 September 1865) was the 14th Accountant General and Controller of Revenue of British Ceylon, (now Sri Lanka). He was born the son of Judge Edward Pennefather of Leap Castle, County Offaly, Ireland, the Lord Chief Justice of Ireland and his wife Susanna Darby. He was appointed Accountant General and Controller of Revenue of Ceylon on 25 April 1861, succeeding William Charles Gibson, and held the office until his death in 1865, when he was succeeded by Robert John Callander.