Chauncey Devereux Stillman (November 9, 1907 – January 24, 1989) was a philanthropist, art collector, conservationist, and banking heir. As one biographer noted, "He was one of the richest men of his generation, but he was never idle of indolent." He founded the (now ) and its related Wethersfield Estate & Gardens in Dutchess County, New York, which is now listed on the National Register of Historic Places.