The 2003 Indy Japan 300 was Round 3 of the 2003 IndyCar Series. The event was held at Twin Ring Motegi, Japan on 13 April 2003. Scott Dixon started on pole position and Scott Sharp was the race winner.
INDY JAPAN 300 Race Result
| Pos. | No. | Driver | Chassis | Engine | Tire | Started | Laps | Total Time | Laps Led | Status | Points | Avg. Speed | Pit Stops |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | Scott Sharp | Dallara | Toyota | Firestone | 7 | 200 | - | 26 | Running | 50 | 129.09 | - |
| 2 | 15 | Kenny Brack | Dallara | Honda | Firestone | 6 | 200 | - | 15 | Running | 40 | - | - |
| 3 | 21 | Felipe Giaffone | G-Force | Toyota | Firestone | 9 | 200 | - | 8 | Running | 35 | - | - |
| 4 | 7 | Michael Andretti | Dallara | Honda | Firestone | 10 | 200 | - | 0 | Running | 32 | - | - |
| 5 | 31 | Al Unser Jr. | Dallara | Toyota | Firestone | 8 | 200 | - | 0 | Running | 30 | - | - |
| 6 | 4 | Sam Hornish Jr. | Dallara | Chevrolet | Firestone | 13 | 199 | - | 0 | Running | 28 | - | - |
| 7 | 27 | Dan Wheldon | Dallara | Honda | Firestone | 5 | 198 | - | 0 | Running | 26 | - | - |
| 8 | 12 | Tora Takagi | G-Force | Toyota | Firestone | 3 | 198 | - | 0 | Running | 24 | - | - |
| 9 | 13 | Greg Ray | G-Force | Honda | Firestone | 23 | 197 | - | 0 | Running | 22 | - | - |
| 10 | 24 | Robbie Buhl | Dallara | Chevrolet | Firestone | 19 | 192 | - | 0 | Running | 20 | - | - |
| 11 | 54 | Shinji Nakano | Dallara | Honda | Firestone | 21 | 190 | - | 0 | Accident | 19 | - | - |
| 12 | 2 | Jaques Lazier | Dallara | Chevrolet | Firestone | 16 | 190 | - | 0 | Accident | 18 | - | - |
| 13 | 52 | Buddy Rice | Dallara | Chevrolet | Firestone | 20 | 181 | - | 0 | Running | 17 | - | - |
| 14 | 11 | Tony Kanaan | Dallara | Honda | Firestone | 2 | 177 | - | 70 | Accident | 18 | - | - |
| 15 | 9 | Scott Dixon | G-Force | Toyota | Firestone | 1 | 177 | - | 45 | Accident | 15 | - | - |
| 16 | 10 | Tomas Scheckter | G-Force | Toyota | Firestone | 4 | 168 | - | 36 | Accident | 14 | - | - |
| 17 | 6 | Alex Barron | G-Force | Toyota | Firestone | 12 | 167 | - | 0 | Accident | 13 | - | - |
| 18 | 14 | A.J. Foyt IV | G-Force | Toyota | Firestone | 18 | 101 | - | 0 | Accident | 12 | - | - |
| 19 | 91 | Buddy Lazier | Dallara | Chevrolet | Firestone | 17 | 63 | - | 0 | Engine | 11 | - | - |
| 20 | 5 | Shigeaki Hattori | G-Force | Toyota | Firestone | 22 | 48 | - | 0 | Vibration | 10 | - | - |
| 21 | 55 | Roger Yasukawa | Dallara | Honda | Firestone | 15 | 45 | - | 0 | Accident | 9 | - | - |
| 22 | 3 | Helio Castroneves | Dallara | Toyota | Firestone | 11 | 45 | - | 0 | Accident | 8 | - | - |
| 23 | 23 | Sarah Fisher | Dallara | Chevrolet | Firestone | 14 | 35 | - | 0 | Accident | 7 | - | - |
| 24 | 18 | Scott Mayer | Dallara | Chevrolet | Firestone | 24 | 8 | - | 0 | Accident | 6 | - | - |