| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | Limited overs cricket(50 overs per innings) |
| Tournament format(s) | Knockout |
| Champions | Gloucestershire (2nd title) |
| Participants | 60 |
| Matches | 59 |
| Most runs | 318 Tim Hancock (Gloucestershire) |
| Most wickets | 15 Saqlain Mushtaq (Surrey) |
The 1999 NatWest Trophy was the 19th NatWest Trophy. It was an English limited overs county cricket tournament which was held between 4 May and 29 August 1999.[1] The tournament was won by Gloucestershire who defeated Somerset by 50 runs in the final at Lord's.