Patrick Sheane Duncan (born 1947) is an American writer, film producer and director. A graduate of Grand Valley State University in Allendale Charter Township, Michigan, Duncan's career has been influenced by his Vietnam War experiences, which inspired the television mini-series Vietnam War Story (1987) and its sequel Vietnam War Story: The Last Days (1989) and the films 84C MoPic (1989) and Courage Under Fire (1996). Additional writing credits include A Home of Our Own (1993), The Pornographer (1994), Nick of Time (1995), Mr. Holland's Opus (1995), and the television movies (2003), Elvis (2005), and the Little Red Wagon (2012).