Sir Marsom Henry Boyd-Carpenter KCVO (born 11 October 1939) is a son of Francis Henry Boyd-Carpenter by his wife Nina (née Townshend).
In 1971 he married Lesley Ann Davies; they have a son, William, and a daughter, Alexandra Boyd-Carpenter. Sir Henry and Lady Boyd-Carpenter now live near Monmouth.
Boyd-Carpenter was Solicitor to the Duchy of Cornwall from 1974–94 and a Partner (later Managing Partner) of Farrer & Co, Solicitors from 1968. He served as Private Solicitor to HM The Queen from 1995 until 2002.
Boyd-Carpenter's other memberships include: Law Society of England and Wales (1966); Council of The Prince of Wales's Institute of Architecture (1995); Board of the British Library (1999); Honorary Steward Westminster Abbey (1980); Hon. Legal Advisor to the Canterbury Cathedral Trust Fund (1994); Member of the Governing Body Charterhouse (1981); Governor Sutton’s Hospital in Charterhouse (1994); St. Mary’s School, Gerrards Cross (1967–1970); Council of Chelsea Physic Garden (1983); Trustee National Gardens Scheme (1998); and, Merlin Trust (1998).
- "Sir Henry Boyd-Carpenter, KCVO Authorised Biography". Debrett’s People of Today. Retrieved 6 April 2011.
- "Moving On". The Law Gazette. 15 March 2002. Retrieved 6 April 2011.