Leo D. Mahoney Arena is a 3,500-seat multi-purpose arena on the campus of Fairfield University, located in Fairfield, Connecticut. It is home to the Fairfield Stags men's basketball, women's basketball and volleyball teams. The 85,000 square foot building was opened in November 2022 on the site of Fairfield's former on campus arena, Alumni Hall. With the opening of Mahoney Arena, the men's Stags basketball team played all its home games on campus for the first time in 2022-23 since the 1999-2000 season, instead of the larger Total Mortgage Arena in nearby Bridgeport. In addition to sporting events, the arena will also host other campus events such as concerts and graduations.