Fred A. Leuchter
（重定向自Leuchter）
Fred Arthur Leuchter, Jr. (born February 7, 1943) is an American Holocaust denier. In the past, he had been contracted by governmental authorities of several states of the United States to improve the design of instruments for capital punishment, but he no longer does so, primarily due to his lack of formal engineering experience, but also because of charges of running a "death row shakedown" in which Leuchter threatened to testify for the defense in capital cases if he was not given contracts for his services by the state.