| 2013-07-27 | UFC on Fox: Johnson vs. Moraga | Lightweight | Justin Salas def. Aaron Riley | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2011-09-24 | UFC 135: Jones vs. Rampage | Lightweight | Tony Ferguson def. Aaron Riley | TKO (corner stoppage) | 1 | 5:00 |
| 2010-05-29 | UFC 114: Rampage vs. Evans | Lightweight | Aaron Riley def. Joe Brammer | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2009-11-14 | UFC 105: Couture vs. Vera | Lightweight | Ross Pearson def. Aaron Riley | TKO (doctor stoppage) | 2 | 4:38 |
| 2009-08-08 | UFC 101: Declaration | Lightweight | Aaron Riley def. Shane Nelson | Decision (unanimous) (30-27, 30-27, 30-27) | 3 | 5:00 |
| 2009-03-07 | UFC 96: Jackson vs. Jardine | Lightweight | Shane Nelson def. Aaron Riley | TKO (punches) | 1 | 0:44 |
| 2008-11-15 | UFC 91: Couture vs. Lesnar | Lightweight | Aaron Riley def. Jorge Gurgel | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2006-01-16 | UFC Ultimate Fight Night 3 | Welterweight | Spencer Fisher def. Aaron Riley | TKO (doctor stoppage) | 1 | 5:00 |
| 2002-05-10 | UFC 37: High Impact | Welterweight | Robbie Lawler def. Aaron Riley | Decision (unanimous) (29–28, 29–27, 29–27) | 3 | 5:00 |