Harold Powers "Brick" Muller (June 12, 1901 – May 17, 1962) was a professional football player-coach for the Los Angeles Buccaneers during their only season in the National Football League in 1926. He was also an American track and field athlete who competed mainly in the high jump. Muller competed for the United States in the 1920 Summer Olympics held in Antwerp, Belgium in the high jump, where he won the silver medal.