1980 Dallas Cowboys season

The 1980 Dallas Cowboys season was their 21st in the league. The team improved to 12-4 following Roger Staubach's retirement after the 1979 season. They qualified for the 1980 NFL postseason as an NFC Wild Card, yet ultimately lost in the Conference Championship game.

Going into the final week of the season, Dallas (11–4) played Philadelphia (12–3) at Texas Stadium. Under that season's NFL tiebreakers, Dallas had to beat the Eagles by 25 points or greater to win the NFC East, entering the NFC postseason as the number two seed while Philadelphia would be a wildcard team. The Eagles win NFC East should the Cowboys lose, tie or win by 24 points or fewer.

Dallas was leading the final regular season game 35–10 in the fourth quarter; however, the Eagles scored 17 unanswered points to pull within 35–27. Dallas had to play an extra week in the Wild Card round and as visitors in the following week road game in Atlanta in the Divisional Round. Dallas lost at Philadelphia in the NFC Championship Games

Schedule
Division opponents are in bold text