New York Giants Owner John Mara Diagnosed with Cancer

John Mara, the co-owner and president of the New York Giants, has announced that he has been diagnosed with cancer. The announcement came on Monday, September 29, 2025, just one day after the Giants secured their first victory of the NFL season, defeating the Los Angeles Chargers 21-18 at MetLife Stadium in East Rutherford, New Jersey. Mara, who is 70 years old, expressed feelings of strength and optimism as he embarks on his treatment journey.

In a statement released by the New York Giants, Mara confirmed his diagnosis and reassured fans that he is already undergoing a treatment plan recommended by his medical team. “I have recently been diagnosed with cancer and have been following the treatment plan recommended by an outstanding team of doctors. I’m feeling strong and optimistic, and I’m committed to seeing this through to a positive outcome,” he said.

Mara emphasized his determination to remain active in his role with the team throughout his treatment. “I plan to remain active with the team throughout my treatment, and I’m fortunate to be surrounded by incredible support, personally, professionally, and medically,” he added. He also requested respect for his family’s privacy during this challenging time.

Legacy and Leadership in the Giants Organization

John Mara has a deep-rooted connection to the Giants franchise, which was founded in 1925 by his grandfather, Tim Mara. He has served as the team’s president and CEO since 2005. The organization is co-owned by the Mara family and the Tisch family, who became partners in 1991. Mara’s leadership has been pivotal in guiding the Giants through various challenges over the years, and his commitment to the team remains steadfast even in the face of personal adversity.

The timing of Mara’s announcement, following the team’s hard-fought victory, showcases his resilience and dedication. As news outlets such as Newsweek and Larry Brown Sports have reported, details regarding the specific type and stage of Mara’s cancer have not been disclosed. For now, Mara’s primary focus is on his health and continuing to support the Giants during the ongoing season.

Mara’s statement reflects his love for the team and the community that rallies around it. His unwavering spirit serves as an inspiration to fans and players alike as they navigate their own challenges on and off the field.

As the Giants prepare for their next matches, John Mara’s presence will continue to be felt, both in the locker room and among the fanbase. His journey through treatment will undoubtedly be watched closely by all who support the franchise.