The 1977 Denver Broncos season was the team's 18th year in professional football and its eighth with the National Football League (NFL).
The team had by far its best season to date, finishing first in the AFC West and making the playoffs for the first time in franchise history. The Broncos won the first two playoff games in franchise history (over perennial AFC powerhouses Pittsburgh and Oakland) and won their first AFC Championship, earning a berth in Super Bowl XII, where they fell to the NFC champion Dallas Cowboys, 27–10.
Still, 1977 was a major leap for the Broncos, who had never won more than nine games in a season. Coach Red Miller — in his first season as the Broncos' head coach — was named NFL Coach of the Year, and quarterback Craig Morton was named NFL Comeback Player of the Year.
Denver's 1977 season is chronicled in Terry Frei's 2008 book, '77: Denver, the Broncos and a Coming of Age.