The movie "Will Penny" was filmed in several locations in California, including Bishop, Inyo County, the Sierra Nevada Mountains, Big Pine, and Old Tucson in Arizona. Notably, some scenes were shot in the Buttermilk Valley near Bishop, California, and the Sierra Nevada region provided picturesque mountain backdrops for the film. Additional filming took place at Old Tucson Studios in Arizona. The production occurred in early 1967.
