Leo is an unincorporated community in Cooke County, Texas, United States. According to the Handbook of Texas, the community had a population of 20 in 2000. It is located within the Dallas-Fort Worth Metroplex.
The first residents of Leo arrived before the American Civil War. The population had shrunk from 1990 to 2000. The Liberman Broadcasting Tower Era is near Leo.
Today, Leo is served by the Era Independent School District.