George A. Hart (fl. late 20th century) is a physicist and is best known in regard to his regular appearances on the Coast to Coast AM late-night radio talk show, and to a lesser extent for a discovery leading to an improvement of the rare gas halide excimer laser. Hart specialized in the application of supercomputers to the mathematical modeling of systems exhibiting extremely complex behavior. As a consultant to the Pentagon, he continues to work on the next generation of Strategic Defense Initiative technology.