The Stadium Series is an event held by the National Hockey League (NHL) in which a regular-season hockey game is played outdoors. This event is distinct from the NHL Winter Classic and NHL Heritage Classic outdoor games.
The first Stadium Series was held in 2014 and consisted of seven teams participating in four games held in three venues. In 2015, only one game in the Stadium Series was held, while in 2016, two games were held. In 2017 it will consist of only one game.