Leonard Harvey Nitz (born September 30, 1956) is a retired track cyclist from the United States. He won the silver medal in the 4000m team pursuit and bronze in the 4000m individual pursuit at the 1984 Summer Olympics in Los Angeles, California. Nitz was the bronze medalist in the Amateur Points Race at the 1986 UCI Track Cycling World Championships in Colorado Springs, Colorado. He is the coach of cyclist James Hibbard.