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.

The AFC Championship Game is the annual championship game of the American Football Conference (AFC) and one of the two semifinal playoff games of the National Football League (NFL), the largest professional American football league in the world. The game is played on the last Sunday in January by the two remaining playoff teams, following the AFC postseason's first two rounds. The AFC champion then advances to face the winner of the NFC Championship Game in the Super Bowl.