The 1973 Gillette Cup was the eleventh Gillette Cup, an English limited overs county cricket tournament.
[1] The tournament was won by Gloucestershire County Cricket Club who defeated Sussex County Cricket Club by 40 runs in the final at Lord's.
The seventeen first-class counties, were joined by five Minor Counties: Bedfordshire, Dorset, Durham, Staffordshire and Wiltshire.
The winners in the second round then progressed to the quarter-final stage.
The tournament was notable for Durham (then a minor county) defeating Yorkshire.