What was Dr. House’s father’s name in House M.D.?

Dr. House’s father was named John House in House M.D.

John House appears in the series as Gregory House’s father, a Marine Corps pilot. House believes John is his biological father for much of his life, but the show later reveals that John is not his biological parent.

That revelation becomes part of the episode “Birthmarks,” in which House investigates family history after learning information about his parentage. The storyline adds another layer to House’s distrust and complicated relationship with his parents, especially his tendency to question information that others accept as certain.

John House is played by R. Lee Ermey. This detail is easy to confuse with House’s own name, Gregory, or with his biological father, Thomas Bell. The show establishes John as the man who raised House, while Thomas Bell is revealed as his biological father.