| Administrator: | Test and County Cricket Board |
| Cricket Format: | Limited overs cricket(60 overs per innings) |
| Tournament Format: | Knockout |
| Champions: | Sussex |
| Count: | 3 |
| Participants: | 22 |
| Matches: | 21 |
| Most Runs: | 361 Viv Richards (Somerset) |
| Most Wickets: | 12 Geoff Arnold (Sussex) |
| Website: | CricketArchive tournament page |
| Previous Year: | 1977 |
| Previous Tournament: | 1977 Gillette Cup |
| Next Year: | 1979 |
| Next Tournament: | 1979 Gillette Cup |
The 1978 Gillette Cup was the sixteenth Gillette Cup, an English limited overs county cricket tournament. It was held between 5 July and 2 September 1978.[1] The tournament was won by Sussex County Cricket Club who defeated Somerset County Cricket Club by 5 wickets in the final at Lord's.
The seventeen first-class counties, were joined by five Minor Counties: Devon, Durham, Shropshire, Staffordshire 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 2 September 1978.
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See main article: 1978 Gillette Cup Final.