An all-seater stadium is a sports stadium in which every spectator has a seat. This is commonplace in professional association football stadiums in nations such as the United Kingdom, Spain, and the Netherlands. Most association football and American football stadiums in the United States and Canadian Football League stadiums in Canada are all-seaters, as are most baseball and track and field stadiums in those countries. A stadium that is not an all-seater has areas for attendees holding standing-room only tickets to stand and view the proceedings. Such standing areas are known as terraces in Britain. Stands with only terraces used to dominate the football attendance in the UK. For instance, the South Bank Stand behind the southern goal at Molineux Stadium, home of Wolverhampton Wanderers, had a maximum of 32,000 standing attenders, while the rest of the stadium hosted a little bit less than that; the total maximum attendance was around 59,000.

A stadium is a place or venue for (mostly) outdoor sports, concerts, or other events and consists of a field or stage completely surrounded by a tiered structure designed to allow spectators to stand or sit and view the event.