The 1978 NFL season was the 59th regular season of the National Football League. The league expanded the regular season from a 14-game schedule to 16 games, which it remained in place until 2021 when it was increased to 17 games. Furthermore, the playoff format was expanded from 8 teams to 10 teams by adding another wild card from each conference. The wild card teams played each other, with the winner advancing to the playoff round of eight teams. The season ended with Super Bowl XIII when the Pittsburgh Steelers defeated the Dallas Cowboys at the Orange Bowl in Miami. The average salary for a player in 1978 was under $62,600, up 13.2 percent over the previous year. Fran Tarkenton was the highest-paid quarterback at $360,000 and running back O. J. Simpson was the highest paid player, at just under $733,400.

Draft

The 1978 NFL draft was held from May 2 to 3 at New York City's Roosevelt Hotel. With the first pick, the Houston Oilers selected running back Earl Campbell of Texas, the Heisman Trophy winner.

New officials

Future referees Tom Dooley, Dale Hamer and Dick Hantak were among those entering the league. Bernie Ulman, the head linesman for Super Bowl I and referee for Super Bowl IX, retired prior to the season, which left the NFL with only 14 crews for the 1978 season. Dooley (103), Hamer (104) and Hantak (105) were among the first officials to wear triple-digit numbers, joined by Bob Boylston (101), Gene Carrabine (102), Al Jury (106), Jim Kearney (107), Bob McLaughlin (108), Sid Semon (109), and Jim Osborne (110).

Major rule changes

The league passed major rule changes to encourage offensive scoring. In 1977 – the last year of the so-called "Dead Ball Era" – teams scored an average of 17.2 points per game, the lowest total since 1942.

Regular season

New interconference scheduling

The change to a 16-game season also marked the start of a new scheduling format that saw a division in one conference play a division in another conference, rotating every season and repeating the process every three years. A change was also made to non-divisional opponents in a team's own conference, which became based on divisional positions from the previous season. Previously, teams played rotating groups of opponents in the other conference and in other divisions of their own conference, although some opponents were cut in 1976 and 1977 to allow for games against the Seahawks and Buccaneers. This format remains in effect, though it has been slightly modified over the years, most recently with the addition of two more divisions in 2002. The interconference matchups for 1978 were as follows:

Division races

Starting in 1978, and continuing through 1989 (except 1982), ten teams qualified for the playoffs: the winners of each of the divisions, and two wild-card teams in each conference. The two wild cards would meet for the right to face whichever of the three division winners had the best overall record (or, if the winner of the wild-card playoff was from the same division as that team, the division winner with the second best overall record). The tiebreaker rules were based on head-to-head competition, followed by division records, common opponents' records, and conference play.

National Football Conference

American Football Conference

Final standings

Tiebreakers

Playoffs

Statistical leaders

Team

Individual

Awards

Coaching changes

Offseason

In-season

Uniform changes

Television

ABC, CBS, and NBC each signed four-year contracts to renew their rights to broadcast Monday Night Football, the NFC package, and the AFC package, respectively. The new contracts are adjusted for the expanded season, with CBS awarded the rights to the new NFC wild card game, and NBC the rights to the new AFC wild card game. The teams of Dick Enberg and Merlin Olsen and Curt Gowdy and John Brodie began the season as NBC's co-head crews, while Jim Simpson was demoted from #2 play-by-play. This would be Gowdy's last season on NBC as network executives wanted to promote Enberg to #1, but let Gowdy call the Super Bowl. Mike Adamle joined NBC's pregame show NFL '78 as an analyst. Additionally; Simpson would leave after Week 2 of the following season to join the newly-launched ESPN. Meanwhile, former Miss Ohio USA Jayne Kennedy replaced Phyllis George as reporter on The NFL Today.