Robert "Red" Miller (October 31, 1927 – September 27, 2017) was an American football coach. He served as the head coach for the Denver Broncos of the National Football League (NFL) from 1977 to 1980. In his first year as Denver's head coach, he led the 1977 Broncos to Super Bowl XII, where they lost to the Dallas Cowboys. Miller was also the head coach of the Denver Gold of the United States Football League (USFL) for one season, in 1983.