List of indoor arenas by capacity

The following is a list of arenas ordered by seating capacity, which is the maximum number of seated spectators the arena can accommodate for a sports event. Only the capacity for indoor sports, such as basketball, ice hockey, and volleyball, are included. Currently all arenas with a capacity of 15,000 or more are included.

AT&T Stadium (Dallas, Texas, US), the Carrier Dome (Syracuse, New York, US) and the Stade Pierre-Mauroy (Lille, France), are not included as they are dome and retractable roof stadiums built for field sports that also host indoor events. The Mercedes-Benz Superdome, which does not have a retractable roof, has been excluded from this list; it regularly seats more than 70,000 people for basketball games (NCAA and NBA), boxing (over 65,000 for the Ali-Spinks Rematch), and more than 75,000 for professional wrestling. In 1981 the Rolling Stones reported Superdome attendance of 87,500 for a concert, while Pope John Paul II spoke to a crowd of more than 80,000 children in 1987.

The list is divided into three subsections: current arenas, arenas under construction, and arenas which are closed no longer used for sporting events.