| Type: | NC |
| Country: | UK |
| Grand Prix: | International Gold Cup |
| Official Name: | XIII Gold Cup |
| Location: | Oulton Park, Cheshire |
| Date: | 17 September |
| Year: | 1966 |
| Course: | Permanent racing facility |
| Course Mi: | 2.761 |
| Course Km: | 4.4434 |
| Distance Laps: | 40 |
| Distance Mi: | 108.4 |
| Distance Km: | 177.736 |
| Pole Driver: | Jack Brabham |
| Pole Country: | Australia |
| Pole Team: | Brabham-Repco |
| Pole Time: | 1:34.2 |
| Fast Driver: | Jack Brabham |
| Fast Team: | Brabham-Repco |
| Fast Country: | Australia |
| Fast Driver2: | Denny Hulme |
| Fast Team2: | Brabham-Repco |
| Fast Country2: | New Zealand |
| Fast Time: | 1:36.6 |
| First Driver: | Jack Brabham |
| First Country: | Australia |
| First Team: | Brabham-Repco |
| Second Driver: | Denny Hulme |
| Second Country: | New Zealand |
| Second Team: | Brabham-Repco |
| Third Driver: | Jim Clark |
| Third Country: | UK |
| Third Team: | Lotus-Climax |
The 13th Gold Cup was a motor race, run to Formula One rules, held on 17 September 1966 at Oulton Park, England. The race was run over 40 laps of the circuit, and was won by Australian driver Jack Brabham in a Brabham BT19.
The race ended in a very close finish, with Denny Hulme crossing the line a fraction of a second behind Brabham. Hulme was driving a slightly newer Brabham model, the BT20.
This was John Campbell-Jones' last appearance in a Formula One race.[1]
| Pos | No. | Driver | Entrant | Constructor | Time/Retired | Grid | |
|---|---|---|---|---|---|---|---|
| 1 | 3 |  Jack Brabham | Brabham Racing Organisation | Brabham-Repco | 1.06:14.2 | 1 | |
| 2 | 4 |  Denny Hulme | Brabham Racing Organisation | Brabham-Repco | + 0.0 s | 2 | |
| 3 | 2 | Jim Clark | Team Lotus | Lotus-Climax | + 25.2 s | 5 | |
| 4 | 15 | Innes Ireland | Bernard White Racing | BRM | + 1:44.6 s | 9 | |
| 5 | 10 | Chris Lawrence | J.A. Pearce Engineering | Cooper-Ferrari | 38 laps | 8 | |
| Ret | 5 | Bob Anderson | DW Racing Enterprises | Brabham-Climax | Con-rod | 6 | |
| Ret | 11 | Mike Spence | Reg Parnell (Racing) | Lotus-BRM | Clutch | 7 | |
| Ret | 7 | Graham Hill | Owen Racing Organisation | BRM | Engine | 4 | |
| Ret | 8 | Jackie Stewart | Owen Racing Organisation | BRM | Overheating | 3 | |
| DSQ | 9 | John Campbell-Jones | John Willment Automobiles | BRP-Climax | Oil leak | 10 | |
| DNS | 2 | Peter Arundell | Team Lotus | Lotus-Climax | Car driven by Clark | - | |
| DNS | 1 | Jim Clark | Team Lotus | Lotus-BRM | Engine | - |