The 2003 AMA Superbike Championship was the 29th season of the AMA Superbike Championship.
| No | Round/Circuit | Superbike Race 1 Winner | Superbike Race 2 Winner | Superstock Race Winner | FX Race Winner | Supersport Race Winner | 250 GP Race Winner |
|---|---|---|---|---|---|---|---|
| 1 | | Miguel Duhamel | - | - | - | - | - |
| 2 | | Mat Mladin | Mat Mladin | Tommy Hayden | Ben Spies | Jamie Hacking | Rich Oliver |
| 3 | | Mat Mladin | Mat Mladin | Tommy Hayden | Ben Spies | Jamie Hacking | Rich Oliver |
| 4 | | Aaron Yates | Mat Mladin | Vincent Haskovec | Jamie Hacking | Ben Spies | Rich Oliver |
| 5 | | Eric Bostrom | - | Tony Meiring | Damon Buckmaster | Jamie Hacking | Rich Oliver |
| 6 | | Mat Mladin | Eric Bostrom | Steve Rapp | Damon Buckmaster | Tommy Hayden | Rich Oliver |
| 7 | | Aaron Yates | - | Steve Rapp | Jake Zemke | Miguel Duhamel | Rich Oliver |
| 8 | | Mat Mladin | - | Josh Hayes | Ben Spies | Jamie Hacking | Rich Oliver |
| 9 | | Mat Mladin | Mat Mladin | Josh Hayes | Ben Spies | Jake Zemke | Rich Oliver |
| 10 | | Mat Mladin | Kurtis Roberts | Tommy Hayden | Ben Spies | Damon Buckmaster | Rich Oliver |
| 11 | | Aaron Yates | Kurtis Roberts | Tommy Hayden | Jamie Hacking | Tommy Hayden | Rich Oliver |