Dr. Robert Emlyn Havard (1901–1985) was the physician of C.S. Lewis, his wife Joy Gresham and John Ronald Reuel Tolkien.
Lewis, and Havard joined the Oxford-based Inklings because of the literary interests he shared with that group. Like J.R.R. Tolkien, he was a Roman Catholic. Havard was sometimes referred to by the Inklings as the "Useless Quack," mainly because Warren Lewis once called him so upon being irritated by his tardiness, and his brother, Jack, thought it quite amusing at the time and caused the nickname to continue. The abbreviation "U.Q." was thereafter a common reference to Havard. Hugo Dyson once called him "Humphrey" when he could not remember his name. After that, Havard was quite frequently known as "Dr. Humphrey Havard," to the extent that when Douglas Gresham came to know him years later and became his patient, it was some time before he discovered Robert Havard's actual name was not really Humphrey.