Humphrey William Bouverie Carpenter (29 April 1946 – 4 January 2005) was an English biographer, writer, and radio broadcaster.
Carpenter was born, died, and lived practically all of his life, in the city of Oxford. His father was the Rt. Rev. Harry James Carpenter. His mother was Urith Monica Trevelyan, who had training in the Fröbel teaching method. As a child, he lived in the Warden's Lodgings at Keble College, Oxford, where his father served as Warden until his appointment as Bishop of Oxford. He was educated at the Dragon School Oxford, and Marlborough College, and then read English at Keble. During his appointment at BBC Radio Oxford, Humphrey met his future wife, Mari Prichard (whose father was Caradog Prichard, the Welsh novelist and poet); they married in 1973.
His notable output of biographies included: J. R. R. Tolkien (1977) (also editing of The Letters of J. R. R. Tolkien), The Inklings (1978), W. H. Auden (1981), Ezra Pound (1988), Evelyn Waugh (1989), Benjamin Britten (1992), Robert Runcie (1997), and Spike Milligan (2004). His last book, The Seven Lives of John Murray (2008) about John Murray and the famous publishing house of Albemarle Street, was published posthumously.