Die NFL-Saison 1984 war die 65. Saison im American Football in der National Football League (NFL). Die Regular Season begann am 2. September 1984 und endete am 17. Dezember 1984. Die Saison endete mit dem Pro Bowl am 27. Januar im Aloha Stadium in Honolulu, Hawaii.
Die Baltimore Colts wechselten nach Indianapolis (Indiana) und spielten ab der Saison 1984 im Hoosier Dome.
| AFC East | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (1) Miami Dolphins | 14 | 4 | 0 | 0,875 | 513 | 298 | 8–0 | 10–2 | | New England Patriots | 9 | 7 | 0 | 0,563 | 362 | 352 | 6–2 | 9–3 | | New York Jets | 7 | 9 | 0 | 0,438 | 332 | 364 | 3–5 | 7–7 | | Indianapolis Colts | 4 | 12 | 0 | 0,250 | 239 | 414 | 2–6 | 4–8 | | Buffalo Bills | 2 | 14 | 0 | 0,125 | 250 | 454 | 1–7 | 1–11 | | AFC Central | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (3) Pittsburgh Steelers | 9 | 7 | 0 | 0,563 | 387 | 310 | 3–3 | 6–6 | | Cincinnati Bengals | 8 | 8 | 0 | 0,500 | 339 | 339 | 5–1 | 6–6 | | Cleveland Browns | 5 | 11 | 0 | 0,313 | 250 | 297 | 3–3 | 4–8 | | Houston Oilers | 3 | 13 | 0 | 0,188 | 240 | 437 | 1–5 | 3–9 | | AFC West | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (2) Denver Broncos | 13 | 3 | 0 | 0,813 | 353 | 241 | 6–2 | 10–2 | | (4) Seattle Seahawks | 12 | 4 | 0 | 0,750 | 418 | 282 | 5–3 | 8–4 | | (5) Los Angeles Raiders | 11 | 5 | 0 | 0,688 | 368 | 278 | 5–3 | 8–4 | | Kansas City Chiefs | 8 | 8 | 0 | 0,500 | 314 | 324 | 4–4 | 7–7 | | San Diego Chargers | 7 | 9 | 0 | 0,438 | 394 | 413 | 0–8 | 3–9 | | | NFC East | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (2) Washington Redskins | 11 | 5 | 0 | 0,688 | 426 | 310 | 5–3 | 8–4 | | (5) New York Giants | 9 | 7 | 0 | 0,563 | 299 | 301 | 5–3 | 7–7 | | St. Louis Cardinals | 9 | 7 | 0 | 0,563 | 423 | 345 | 5–3 | 6–6 | | Dallas Cowboys | 9 | 7 | 0 | 0,563 | 308 | 308 | 3–5 | 7–7 | | Philadelphia Eagles | 3 | 12 | 1 | 0,219 | 267 | 347 | 2–6 | 3–8–1 | | NFC Central | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (3) Chicago Bears | 10 | 6 | 0 | 0,625 | 325 | 248 | 7–1 | 8–4 | | Green Bay Packers | 8 | 8 | 0 | 0,500 | 390 | 309 | 5–3 | 8–4 | | Tampa Bay Buccaneers | 6 | 10 | 0 | 0,375 | 335 | 380 | 3–5 | 5–9 | | Detroit Lions | 4 | 11 | 1 | 0,281 | 283 | 408 | 4–4 | 4–7–1 | | Minnesota Vikings | 3 | 13 | 0 | 0,188 | 276 | 484 | 2–6 | 3–9 | | NFC West | | Team | S | N | U | SQ | P+ | P− | DIV | CONF | | (1) San Francisco 49ers | 15 | 1 | 0 | 0,938 | 475 | 227 | 6–0 | 12–0 | | (4) Los Angeles Rams | 10 | 6 | 0 | 0,625 | 346 | 316 | 3–3 | 7–5 | | New Orleans Saints | 7 | 9 | 0 | 0,438 | 298 | 361 | 1–5 | 4–8 | | Atlanta Falcons | 4 | 12 | 0 | 0,250 | 281 | 382 | 2–4 | 3–9 | |
Legende:
| Siege | Niederlagen | Unentschieden | DIV Gewonnene / verlorene Spiele in der Division | SQ gewonnene Spiele (relativ) |
| P+ gemachte Punkte | P− gegnerische Punkte | Playoff-Teilnehmer | CONF Gewonnene / verlorene Spiele in der Conference |
Tie-Breaker 1984
- In der NFC East beendeten die N.Y. Giants die Saison vor St. Louis und Dallas aufgrund der besseren Bilanz im direkten Vergleich (3–1 gegenüber 2–2 von St. Louis und Dallas 1–3).
- St. Louis war vor Dallas in der NFC East aufgrund ihrer besseren Division-Bilanz (5–3 gegenüber 3–5 von Dallas).
Die Play-offs begannen am 22. Dezember und liefen bis zum 6. Januar 1985. Die San Francisco 49ers gewannen ihren zweiten Super Bowl.
Der Super Bowl XIX fand am 20. Januar 1985 im Stanford Stadium in Stanford, Kalifornien statt. Im Finale trafen die Miami Dolphins auf die San Francisco 49ers.
| | 1 | 2 | 3 | 4 | Gesamt |
| San Francisco 49ers | 7 | 21 | 10 | 0 | 38 |
| Miami Dolphins | 10 | 6 | 0 | 0 | 16 |
| Most Valuable Player | Dan Marino, Quarterback, Miami Dolphins |
| Coach of the Year | Chuck Knox, Seattle Seahawks |
| Offensive Player of the Year | Dan Marino, Quarterback, Miami Dolphins |
| Defensive Player of the Year | Kenny Easley, Safety, Seattle Seahawks |
| Offensive Rookie of the Year | Louis Lipps, Wide Receiver, Pittsburgh Steelers |
| Defensive Rookie of the Year | Bill Maas, Defensive Tackle, Kansas City Chiefs |
| Comeback Player of the Year | John Stallworth, Wide Receiver, Pittsburgh Steelers |
| Man of the Year | Marty Lyons, Defensive Tackle, New York Jets |
| Super Bowl Most Valuable Player | Joe Montana, Quarterback, San Francisco 49ers |
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