List of indoor stadiums

The following is a list of indoor stadiums, ordered by capacity. This is intended to include only stadiums that are used for sports traditionally held outdoors. It is split into two sublists:

Stadiums designed for field sports, such any of a wide variety of football codes, baseball, and/or track and field.
Stadiums designed for tennis.

Only domed and retractable roof stadiums are included, i.e. stadiums that cover both spectators and playing field. Wembley Stadium in London, which seats 90,000 spectators, is not included as the roof can only be partially closed. The stadiums are divided into current stadiums, closed stadiums, and future stadiums.