The 2004 Indy Japan 300 was Round 3 of the 2004 IndyCar Series. The event was held at Twin Ring Motegi, Japan on 17 April 2004. Dan Wheldon started on pole position and 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 | 26 | Dan Wheldon | Dallara | Honda | Firestone | 1 | 200 | - | 192 | Running | 53 | 166.114 | - |
| 2 | 11 | Tony Kanaan | Dallara | Honda | Firestone | 3 | 200 | - | 0 | Running | 40 | - | - |
| 3 | 3 | Helio Castroneves | Dallara | Toyota | Firestone | 15 | 200 | - | 4 | Running | 35 | - | - |
| 4 | 10 | Darren Manning | G-Force | Toyota | Firestone | 10 | 200 | - | 2 | Running | 32 | - | - |
| 5 | 1 | Scott Dixon | G-Force | Toyota | Firestone | 6 | 200 | - | 0 | Running | 30 | - | - |
| 6 | 15 | Buddy Rice | G-Force | Honda | Firestone | 5 | 200 | - | 0 | Running | 28 | - | - |
| 7 | 27 | Dario Franchitti | Dallara | Honda | Firestone | 9 | 199 | - | 0 | Running | 26 | - | - |
| 8 | 55 | Kosuke Matsuura | G-Force | Honda | Firestone | 4 | 199 | - | 0 | Running | 24 | - | - |
| 9 | 8 | Scott Sharp | Dallara | Toyota | Firestone | 12 | 199 | - | 2 | Running | 22 | - | - |
| 10 | 12 | Tora Takagi | Dallara | Toyota | Firestone | 22 | 199 | - | 0 | Running | 20 | - | - |
| 11 | 16 | Roger Yasukawa | G-Force | Honda | Firestone | 13 | 198 | - | 0 | Running | 19 | - | - |
| 12 | 51 | Alex Barron | Dallara | Chevrolet | Firestone | 22 | 196 | - | 0 | Running | 18 | - | - |
| 13 | 4 | Tomas Scheckter | Dallara | Chevrolet | Firestone | 16 | 184 | - | 0 | Running | 17 | - | - |
| 14 | 7 | Bryan Herta | Dallara | Honda | Firestone | 11 | 183 | - | 0 | Radiator | 16 | - | - |
| 15 | 14 | A.J. Foyt IV | Dallara | Toyota | Firestone | 17 | 169 | - | 0 | Running | 15 | - | - |
| 16 | 2 | Mark Taylor | Dallara | Chevrolet | Firestone | 14 | 167 | - | 0 | Accident | 14 | - | - |
| 17 | 17 | Vitor Meira | G-Force | Honda | Firestone | 8 | 166 | - | 0 | Clutch | 13 | - | - |
| 18 | 5 | Adrian Fernandez | G-Force | Honda | Firestone | 18 | 153 | - | 0 | Engine | 12 | - | - |
| 19 | 6 | Sam Hornish Jr. | Dallara | Toyota | Firestone | 7 | 87 | - | 0 | Accident | 12 | - | - |
| 20 | 13 | Greg Ray | G-Force | Honda | Firestone | 2 | 55 | - | 0 | Suspension | 12 | - | - |
| 21 | 24 | Robbie Buhl | Dallara | Chevrolet | Firestone | 21 | 38 | - | 0 | Handling | 12 | - | - |
| 22 | 52 | Ed Carpenter | Dallara | Chevrolet | Firestone | 20 | 38 | - | 0 | Mechanical | 12 | - | - |