Juan Guillermo Bonilla Urania
- Bats Right, Throws Right
- Height 5' 9", Weight 170 lb.
- School Florida State University
- Debut April 9, 1981
- Final Game October 3, 1987
- Born February 12, 1955 in Santurce, P.R.
Juan Bonilla was a 1976 All-American for his play with the Florida State Seminoles. A veteran of parts of six big league seasons, Juan had one season as a regular with the 1983 San Diego Padres. He batted .237 in 152 games and did not return to the bigs until 1985 in a cameo in the Bronx. He was possibly "blackballed" in 1984  due to some recreational drug use back in 1982.
He was known in the Puerto Rico Winter Baseball League as Guillermo Bonilla.