| Administrator: | Marylebone Cricket Club |
| Cricket Format: | Limited overs cricket(60 overs per innings) |
| Tournament Format: | Knockout |
| Champions: | Warwickshire |
| Count: | 1 |
| Participants: | 22 |
| Matches: | 21 |
| Most Runs: | 299 – Dennis Amiss (Warwickshire) |
| Most Wickets: | 10 – Bill Alley (Somerset) 10 – David Brown (Warwickshire) 10 – Roy Palmer (Somerset) |
| Previous Year: | 1965 |
| Previous Tournament: | 1965 Gillette Cup |
| Next Year: | 1967 |
| Next Tournament: | 1967 Gillette Cup |
The 1966 Gillette Cup was the fourth Gillette Cup, an English limited overs county cricket tournament. It was held between 28 April and 3 September 1966.[1] The tournament was won by Warwickshire County Cricket Club in the final at Lord's.
The 17 first-class counties, were joined by five Minor Counties: Berkshire, Cheshire, Hertfordshire, Lincolnshire and Suffolk. Teams who won in the first round progressed to the second round. The winners in the second round then progressed to the quarter-final stage. Winners from the quarter-finals then progressed to the semi-finals from which the winners then went on to the final at Lord's which was held on 3 September 1966.
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