William Augustus Greenlee (December 26, 1893 – July 7, 1952) was a highly successful businessman in Pittsburgh, Pennsylvania, who was born and raised in Marion, North Carolina. After migrating to Pittsburgh as a young man and working in the steel industry, he started to acquire his own businesses. There he also bought the Pittsburgh Crawfords baseball team in 1931, founded the second Negro National League in 1933, serving as president; and built Greenlee Field, one of the few ball parks built for and owned by a Negro league team.