Gregory House is the House M.D. character modeled most directly on Sherlock Holmes. The resemblance is built into his name, methods, relationships, and approach to solving mysteries.
Both characters are exceptional reasoners who use observation, deduction, and unusual clues to identify explanations others miss. House’s medical cases function like detective stories: symptoms are clues, diagnoses are hypotheses, and tests help confirm or eliminate possibilities.
The parallel extends to supporting characters. Dr. James Wilson broadly fills the role of Holmes’s friend and sounding board, similar to Dr. John Watson. House’s surname also echoes Holmes’s surname, while his first name, Gregory, is associated with the detective’s famous attention to detail.
The inspiration does not mean House is simply a medical version of Holmes. The series gives him distinctive problems, including chronic pain, addiction, distrust, and conflict with institutional authority. Those differences allow the show to use detective-story structure while telling a contemporary medical drama.