The 2003 Kentucky 100 was Round 9 of the 2003 IRL Infiniti Pro Series. The event was held at Kentucky Speedway in Kentucky, United States on 16 August 2003. Jeff Simmons was the race winner.
Kentucky 100 Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Laps | Laps Led | Status | Started | Points |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 20 | Jeff Simmons | Dallara | Infiniti | Firestone | 67 | 67 | Running | 2 | 52 |
| 2 | 92 | Cory Witherill | Dallara | Infiniti | Firestone | 67 | 0 | Running | 8 | 40 |
| 3 | 36 | Thiago Medeiros | Dallara | Infiniti | Firestone | 67 | 0 | Running | 5 | 35 |
| 4 | 5 | Arie Luyendyk Jr. | Dallara | Infiniti | Firestone | 67 | 0 | Running | 9 | 32 |
| 5 | 14 | Ed Carpenter | Dallara | Infiniti | Firestone | 67 | 0 | Running | 9 | 30 |
| 6 | 91 | Aaron Fike | Dallara | Infiniti | Firestone | 67 | 0 | Running | 6 | 28 |
| 7 | 27 | Gary Peterson | Dallara | Infiniti | Firestone | 67 | 0 | Running | 12 | 26 |
| 8 | 33 | Paul Dana | Dallara | Infiniti | Firestone | 67 | 0 | Running | 11 | 24 |
| DNF | 99 | Brandon Erwin | Dallara | Infiniti | Firestone | 58 | 0 | Accident | 3 | 22 |
| DNF | 9 | Tom Wood | Dallara | Infiniti | Firestone | 51 | 0 | Accident | 4 | 20 |
| DNF | 25 | G.J. Mennen | Dallara | Infiniti | Firestone | 37 | 0 | Handling | 12 | 19 |
| DNF | 24 | Billy Roe | Dallara | Infiniti | Firestone | 9 | 0 | Electrical | 7 | 18 |
| DNS | 4 | Mark Taylor | Dallara | Infiniti | Firestone | 0 | 0 | DNS | 1 | 17 |