Timothy Mellon is an American businessman and was the chairman and owner of Pan Am Systems, a rail transport, airline, manufacturing and energy, and real estate corporation formerly known as Guilford Transportation Industries, until 2022. The grandson of Andrew Mellon, and the son of Paul Mellon and Mary Conover Brown, Timothy Mellon was trustee of the Andew W. Mellon Foundation for twenty-one years until 2002. He moved from Connecticut to Wyoming, where he currently resides, in 2005.