The Guystac Trophy was a Guyanese inter-county cricket tournament, the final of which had first-class status.
The tournament was played annually, the final being usually between Demerara and Berbice, two former colonies and now counties of Guyana.
The matches were played over a maximum of 4 days but rain caused many games over the years to be drawn.
Originally named the Jones Cup, the matches were first played in 1954/55 but the final didn't get first-class status until 1971/72.
The tournament has continued since 1989/90 under a number of names but the final no longer has first-class status.