William McCoy is a former American football player known for his position as a running back. He played college football at University of California, Berkeley before being drafted into the National Football League (NFL). McCoy had a brief professional career, showcasing his skills primarily in the late 1970s. During his time in the NFL, McCoy played for teams such as the New York Jets and the San Diego Chargers. Although he did not achieve significant individual accolades, he contributed to his teams' efforts on the field and remains a part of the rich history of American football.