1984 SMU Mustangs football team

The 1984 SMU Mustangs football team represented Southern Methodist University (SMU) as a member of the Southwest Conference (SWC) during the 1984 NCAA Division I-A football season. Led by third-year head coach Bobby Collins, the Mustangs compiled an overall record 10–2 with a mark of 6–2 in conference play, sharing the SWC title with Houston and marking the third time in four years that SMU had at least a share of the title. This was the last year the Mustangs would win a conference title until 2023 when they won the American Athletic Conference title.

While Houston, who beat SMU, received a bid to the Cotton Bowl Classic, the Mustangs were invited to play in the Aloha Bowl, where they defeated Notre Dame, 27–20. SMU finished the season ranked No. 8 in both the major polls.

1984 marked SMU's fourth consecutive ten-win season. The Mustangs did not make another bowl game appearance until the 2009 season.