John York
John C. York

(1949-04-18) April 18, 1949 (age 74)
Alma materUniversity of Notre Dame
Loyola University Chicago
Known forCo-chairman, San Francisco 49ers
Co-owner and board member, Leeds United F.C.
SpouseDenise DeBartolo York
ChildrenJed York

John C. York (born April 18, 1949) is a retired American cancer research pathologist, married to Marie Denise DeBartolo York, and former co-owner and current co-chairman of the San Francisco 49ers.[1] and board member of Leeds United.[2]


York was born in Muskogee, Oklahoma. The son of John Clement York, a dentist who died when York was 15, York grew up in Little Rock and attended local schools until college. He graduated from the University of Notre Dame in South Bend, Indiana in 1971.[3] He received a doctorate in blood pathology from Stritch School of Medicine at Loyola University Chicago in 1975, and engaged in seven years of post-doctoral study, specializing in the laboratory diagnosis of lymphoma and leukemia.[4]

York left academia to establish DeYor Laboratories in Boardman, Ohio. In 1993, he sold DeYor Laboratories to Corning Inc.[5] York has made a number of contributions in the medical field, having given a $1.5 million contribution to establish an Endowed Chair in Pathology and an Endowed Chief Residency in Pathology at the University of Arkansas for Medical Sciences. In 1999, he donated a science and math building to Catholic High School for Boys, his alma mater. He also joined Jerry Jones and an anonymous donor in donating $10 million to the school.[6]

On December 28, 2008, John and Denise York announced that their son, Jed York, would become team president and operating head of the franchise, while they would become co-chairpersons responsible for providing resources and maintaining their role of interacting with other owners and NFL executives.[7] John continues to serve as chairman of the NFL's International Committee[8] and also sits on the league's Audit and Business Ventures Committees.[8]

On May 24, 2018, the York family via 49ers Enterprises (the 49ers' business arm) bought shares in English soccer club Leeds United to become a minority investor.[9][10]


  1. ^ San Francisco Gate: "The Family Business / 49ers owner talks of her brother, her privacy and her priorities" by Nancy Gay September 1, 2000
  2. ^ "Leeds United: 49ers Enterprises agree deal to purchase chairman Andrea Radrizzani's remaining 56 per cent stake". 5 November 2021. Archived from the original on June 9, 2023. Retrieved 26 April 2022.
  3. ^ "Notable Alumni". University of Notre Dame. Retrieved 2009-07-04.
  4. ^ Norty (2020-03-01). "10 Things You Didn't Know about John York". Money Inc. Retrieved 2022-06-21.
  5. ^ "Biography". 49ers. Retrieved September 9, 2018.
  6. ^ Brantley, Max (October 10, 2013). "Little Rock Catholic High gets $10 million gift from Jerry Jones, John York and anonymous donor". Arkansas Times. Retrieved September 9, 2018.
  7. ^ "Jed York Named Team President". San Francisco 49ers. Archived from the original on 2009-02-12. Retrieved 2009-07-04.
  8. ^ a b "2009 49ers Media Guide" (PDF). San Francisco 49ers. Retrieved 2009-08-31.[dead link]
  9. ^ "San Francisco 49ers Enterprises Become Minority Investor". Leeds United Football Club. 24 May 2018. Archived from the original on 24 May 2018. Retrieved 24 May 2018.
  10. ^ "Ownership structure - Leeds United". Retrieved 4 June 2018.