Agganis Arena is a 7,200-seat multi-purpose arena in Boston, Massachusetts, United States, on the campus of Boston University, built on the location of the former Commonwealth Armory.
Agganis was dedicated in 2004 and hosted its first event in 2005. It replaced Walter Brown Arena, located at the Case Athletic Center, as the home of BU Men's Ice Hockey, though Walter Brown Arena is still in use as the home of BU Women's Ice Hockey. The BU basketball team played games at the arena until 2015, before moving back to Case Gym.
Agganis serves as a regional auditorium for large events, including concerts, ceremonies of other schools such as Berklee College of Music, musicals, awareness events, and appearances by speakers such as Barack Obama and Dave Chappelle.
Since 2008, Agganis has hosted the annual CRASH-B World Indoor Rowing Championship.