The 1973 Miami Dolphins season was the franchise's eighth season and fourth season in the National Football League (NFL). The team entered the 1973 season as defending Super Bowl champion following its perfect undefeated 1972 season.

In week 1, the Dolphins extended their winning streak to 18 with a 21–13 win over the San Francisco 49ers. However, the following week, they were defeated 12–7 by the Oakland Raiders to end the winning streak. The streak stood as an NFL record until it was broken by the New England Patriots in 2004 whose record of 21 consecutive wins still stands.

The team won the AFC East, finishing with a regular season record of 12–2, and then defeated the Cincinnati Bengals in the Divisional Round, the Raiders in the AFC Championship game, and the Minnesota Vikings in the league's eighth Super Bowl. It was the Dolphins' second consecutive (and to date last)^[1] Super Bowl victory. With the Dolphins' combined records of 17–0 and 15–2 over the course of their 1972 and 1973 seasons, the Dolphins posted a 32–2 total record over 2 years, for a winning percentage of .941. The Dolphins allowed just 10.7 points per game in the regular season, a franchise record still standing today.

The last remaining active member of the 1973 Miami Dolphins was offensive lineman Ed Newman, who retired after the 1984 season, right after making it to Super Bowl XIX, also as a member of the Dolphins.

Although the Dolphins were unable to match their 17–0 perfect season of 1972, many^[who?] sports writers, fans, and Dolphins players themselves felt that the 1973 team was better. While the 1972 team faced no competition in the regular season that had a record of better than 8-6 and/or .500, the 1973 team played against a much tougher schedule that included games against the Oakland Raiders, Pittsburgh Steelers, and Dallas Cowboys (all playoff teams), plus two games against a resurgent Bills squad that featured 2,000-yard rusher O. J. Simpson, and a Cleveland Browns team that finished over .500. Miami finished with a 12–2 regular season, including their opening game victory over the defending 1972 NFC West champions, the San Francisco 49ers that tied an NFL record with eighteen consecutive wins. The Dolphins' streak ended in week two with a 12–7 loss to the Raiders in Berkeley, California.

Just like the two previous seasons, Miami's offense relied primarily on their rushing attack. Fullback Larry Csonka recorded his third consecutive 1,000 rushing yard season (1,003 yards), while running back Mercury Morris rushed for 954 yards and scored 10 touchdowns, while leading the league with 6.4 yards per carry. Running back Jim Kiick was also a key contributor, rushing for 257 yards, and catching 27 passes for 208 yards. Quarterback Bob Griese, the AFC's second leading passer, completed only 116 passes for 1,422 yards, but threw about twice as many touchdown passes (17) as interceptions (8), and earned an 84.3 passer rating. Wide receiver Paul Warfield remained the main deep threat on the team, catching 29 passes for 514 yards and 11 touchdowns. The offensive line remained strong led by center Jim Langer and right guard Larry Little. Griese, Csonka, Warfield, Langer, and Little would all eventually be elected to the Pro Football Hall of Fame.

Miami's "No Name Defense" continued to dominate their opponents. Future Hall of Fame linebacker Nick Buoniconti recovered three fumbles and returned one for a touchdown. Safety Dick Anderson led the team with eight interceptions, which he returned for 163 yards and two touchdowns. And safety Jake Scott, the previous season's Super Bowl MVP, had four interceptions and 71 return yards. The Dolphins were still using their "53" defense devised at the beginning of the 1972 season, where Bob Matheson (#53) would be brought in as a fourth linebacker in a 3–4 defense, with Manny Fernandez at nose tackle. Matheson could either rush the quarterback or drop back into coverage.

In 2007, ESPN.com ranked the 1973 Dolphins as the eight-greatest defense in NFL history,^[2] noting that the team "held 11 opponents to 14 points or less, setting a record by allowing just 150 points in a 14-game season". Defensive end Bill Stanfill set a Dolphins' sack record that still stands, with 18.5. In the playoffs and Super Bowl, they allowed only 33 points against Cincinnati, Oakland and Minnesota. Stanfill, Manny Fernandez, Hall of Fame middle linebacker Nick Buoniconti, and safeties Dick Anderson (AP Defensive Player of the Year) and Jake Scott were all named to the 1973 All-Pro team. They also held record-breaking rusher O. J. Simpson to his lowest total yardage of the season, a mere 55 yards in Week Six.

• Larry Csonka, Super Bowl Most Valuable Player

Pro Bowl Selections (voted by NFL coaches for players other than their own):^[20]

Offense:

• Bob Griese, Quarterback

• Jim Langer, Offensive line (center)

• Larry Little, Offensive line (guard)

• Wayne Moore, Offensive line (tackle)

• Larry Csonka, Running back

• Mercury Morris, Running back

• Paul Warfield, Wide Receiver

• Garo Yepremian, Place Kicker

Defense:

• Bill Stanfill, Defensive end

• Nick Buoniconti, Middle Linebacker

• Dick Anderson, Safety

• Jake Scott, Safety