Jim Clark won the United States Grand Prix 1966 at Watkins Glen on 2 October 1966, starting from P2 on the grid. Jochen Rindt finished second for Cooper-Maserati, with John Surtees completing the podium for Cooper-Maserati.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Jim ClarkCLA | Lotus-BRM | 108 | 2:09:40.11 | 9 | |
| 2 | 9 | Jochen RindtRIN | Cooper-Maserati | 107 | Out of fuel | 6 | |
| 3 | 4 | John SurteesSUR | Cooper-Maserati | 107 | +1 Lap | 4 | |
| 4 | 13 | Jo SiffertSIF | Cooper-Maserati | 105 | +3 Laps | 3 | |
| 5 | 11 | Bruce McLarenMCL | McLaren-Ford | 105 | +3 Laps | 2 | |
| 6 | 19 | Peter ArundellARU | Lotus-Climax | 101 | +7 Laps | 1 | |
| R | 17 | Innes IrelandIRE | BRM | 96 | Alternator | 0 | |
| N | 8 | Richie GintherGIN | Honda | 81 | Not classified | 0 | |
| R | 12 | Mike SpenceSPE | Lotus-BRM | 74 | Ignition | 0 | |
| R | 18 | Ronnie BucknumBUC | Honda | 58 | Engine | 0 | |
| N | 15 | Jo BonnierBON | Cooper-Maserati | 57 | Not classified | 0 | |
| R | 1 | Jack BrabhamBRA | Brabham-Repco | 55 | Engine | 0 | |
| R | 6 | Jackie StewartSTE | BRM | 53 | Engine | 0 | |
| R | 5 | Graham HillHIL | BRM | 52 | Differential | 0 | |
| R | 3 | Lorenzo BandiniBAN | Ferrari | 34 | Engine | 0 | |
| R | 7 | Denny HulmeHUL | Brabham-Repco | 18 | Engine | 0 | |
| R | 10 | Pedro RodríguezROD | Lotus-BRM | 13 | Retired | 0 | |
| R | 14 | Dan GurneyGUR | Eagle-Weslake | 13 | Clutch | 0 | |
| D | 16 | Bob BondurantBON | Eagle-Climax | 5 | Disqualified | 0 |