Which fictional detective is the character Dr. Gregory House chiefly based on?

Dr. Gregory House is chiefly based on the fictional detective Sherlock Holmes.

The connection appears in House’s name, his deductive reasoning, his difficult personality, and his habit of solving cases through unusual clues. Like Holmes, House notices details other people overlook and treats diagnosis as an intellectual puzzle rather than a straightforward social exercise.

The series also adapts the Holmes-and-Watson relationship. House’s closest friend, Dr. James Wilson, provides companionship, ethical resistance, and a more conventional perspective. Wilson’s initials and role reinforce the literary parallel, although the television characters have their own medical and emotional histories.

The creators did not simply retell Sherlock Holmes stories. Instead, they transferred the detective format into a teaching hospital, replacing crimes with unexplained illnesses and clues with symptoms, test results, and patient histories. This structure is why House M.D. is often described as a medical procedural with a detective-story framework.