The 2005 Cheltenham & Gloucester Trophy was the 4th Cheltenham & Gloucester Trophy, an English county cricket tournament, held between 3 May and 3 September 2005. The competition was contested by all 18 first-class counties, as well as 10 minor counties and the national teams of Scotland, Ireland, the Netherlands and Denmark, to make up a full 32-team tournament. The final was won by the Hampshire Hawks, who beat the Warwickshire Bears by 18 runs at Lord's on 3 September 2005. This would be the final year that the competition was held as a knock-out only format and was also the final year to date in which the minor counties also participated. It would be the first year white balls and coloured clothing was used although red balls and white clothing were still used in the early stages in ma