|1st Commissioner of the PBA|
April 9, 1975 – December 1983
|Succeeded by||Mariano Yenko|
Leopoldo L. Prieto
May 19, 1920
|Died||April 7, 2009 88)(aged|
|Alma mater||De La Salle University|
Acknowledged as "the father of the PBA", Prieto was named commissioner of the PBA upon its founding in 1975 and served in that capacity until his resignation in 1983. During Prieto's tenure as commissioner, the PBA prominently featured the rivalry between Crispa and Toyota. Prieto was lauded for his integrity and his ability to manage egos. Prieto himself described the requirements expected of a PBA commissioner as one "must have a good grasp of the game" and one who "the PBA Board of Governors can trust and respect."
Prieto was a member of the De La Salle Green Archers which won the 1939 NCAA basketball championship and 1939 National Seniors Open title. He later played and coached the YCO Painters. He was the head coach of the Philippines men's national basketball team in the 1956 Melbourne Olympics, leading it to a seventh-place finish. He also coached the YCO Painters to several championships in the Manila Industrial and Commercial Athletic Association. Prieto also was a president of the Manila Jockey Club, and an avid supporter of football in the Philippines.
- Recah Trinidad (2007-05-16). "Pacquiao KO'd: Anatomy of defeat". Philippine Daily Inquirer. Retrieved 2009-04-08.
- Francis Thimsel J. Ochoa (2009-04-08). "Farewell to Leo Prieto, father of the PBA". Philippine Daily Inquirer. Retrieved 2009-04-08.
- "PBA mourns death of founding commish Leo Prieto". GMA News.TV. 2009-04-08. Retrieved 2009-04-08.
- "Prieto, PBA 1st Commissioner, passes away". Philippine Star. 2009-04-08. Retrieved 2009-04-08.
| PBA Commissioner