John S. Middleton | |
|---|---|
 Middleton in 2023 | |
| Citizenship | United States |
| Education | Amherst College (B.A.) Harvard Business School (MBA) |
| Occupation | Businessman |
| Spouse | Leigh Middleton |
John S. Middleton is an American businessperson and philanthropist. He is the managing partner and principal owner of the Philadelphia Phillies of Major League Baseball. He purchased a minority stake in 1994 and increased his ownership to 48 percent by 2014. He became the Phillies' control person in 2016.