Graham John Yost is a Canadian film and television screenwriter. His best-known works are the films Speed, Broken Arrow, and Hard Rain and the TV series Justified. In 2002, he created the television drama series Boomtown. He has also written for the television series Herman's Head and Band of Brothers. He also created the short-lived NBC drama Raines. Yost teamed up with Tom Hanks and Steven Spielberg, along with two of his fellow Boomtown writers Michelle Ashford and Larry Andries, to write and direct episodes of the HBO miniseries The Pacific. Yost is the creator and executive producer of the FX series Justified, and an executive producer on the FX show The Americans. In 2016, he took over as head writer and executive producer of the Amazon Studios series Sneaky Pete. Born in Etobicoke, he graduated from the University of Toronto Schools and Trinity College at the University of Toronto. He is the son of Canadian television personality Elwy Yost, the longtime host of the public broadcaster TVOntario's Saturday Night at the Movies.