Geraldine Holm Hoch (June 10 1924 – May 3 1973) was an American chemical engineer who was one of the first women to work at Pratt & Whitney, Northrop Grumman, Bendix Corporation, the Midwest Research Institute and Lockheed Martin. She patented corrosion prevention systems for the Lockheed L-1011 TriStar and used on the Boeing 747.