Jackie Stewart won the United States Grand Prix 1968 at Watkins Glen on 6 October 1968, starting from P2 on the grid. Graham Hill finished second for Lotus-Ford, with John Surtees completing the podium for Honda.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Jackie StewartSTE | Matra-Ford | 108 | 1:59:20.29 | 9 | |
| 2 | 3 | Graham HillHIL | Lotus-Ford | 108 | +24.68 | 6 | |
| 3 | 9 | John SurteesSUR | Honda | 107 | +1 Lap | 4 | |
| 4 | 7 | Dan GurneyGUR | McLaren-Ford | 107 | +1 Lap | 3 | |
| 5 | 12 | Jo SiffertSIF | Lotus-Ford | 105 | +3 Laps | 2 | |
| 6 | 10 | Bruce McLarenMCL | McLaren-Ford | 103 | +5 Laps | 1 | |
| R | 14 | Piers CourageCOU | BRM | 93 | Out of fuel | 0 | |
| R | 5 | Denny HulmeHUL | McLaren | 92 | Accident | 0 | |
| N | 20 | Lucien BianchiBIA | Cooper-BRM | 88 | Not classified | 0 | |
| R | 8 | Jack BrabhamBRA | Brabham-Repco | 77 | Engine | 0 | |
| R | 6 | Jochen RindtRIN | Brabham-Repco | 73 | Engine | 0 | |
| R | 17 | Vic ElfordELF | Cooper-BRM | 71 | Engine | 0 | |
| R | 11 | Pedro RodríguezROD | BRM | 66 | Suspension | 0 | |
| N | 18 | Jo BonnierBON | McLaren-BRM | 62 | Not classified | 0 | |
| R | 4 | Chris AmonAMO | Ferrari | 59 | Water pump | 0 | |
| R | 13 | Jean-Pierre BeltoiseBEL | Matra | 44 | Transmission | 0 | |
| R | 19 | Bobby UnserUNS | BRM | 35 | Engine | 0 | |
| R | 1 | Mario AndrettiAND | Lotus-Ford | 32 | Clutch | 0 | |
| R | 15 | Derek BellBEL | Ferrari | 14 | Engine | 0 | |
| W | 0 | Jackie OliverOLI | Lotus-Ford | 0 | Withdrew | 0 |