The 2015 NFL season was the 96th season in the history of the National Football League (NFL), and the 50th in the Super Bowl era. To celebrate the 50th season of the Super Bowl, a gold-plated NFL logo and other various gold-themed promotions were used throughout the season. It began on Thursday, September 10, 2015, with the annual kickoff game featuring the defending Super Bowl XLIX champion New England Patriots defeating the Pittsburgh Steelers. The season concluded with Super Bowl 50, the league's championship game, on Sunday, February 7, 2016, at Levi's Stadium in Santa Clara, California, with the Denver Broncos defeating the Carolina Panthers.

The National Football League (NFL) is a professional American football league that consists of 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The NFL is one of the major professional sports leagues in the United States and Canada and the highest professional level of American football in the world. Each NFL season begins annually with a three-week preseason in August, followed by the 18-week regular season which runs from early September to early January, with each team playing 17 games and having one bye week. Following the conclusion of the regular season, seven teams from each conference advance to the playoffs, a single-elimination tournament that culminates in the Super Bowl, which is contested in February and is played between the winners of the AFC and NFC championship games.