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 2015 Denver Broncos season was the franchise's 46th season in the National Football League (NFL) and the 56th overall. It was also the fourth season with Peyton Manning as the team's starting quarterback, as well as the final season of Manning's 18-year NFL career.