| Administrator(s) | England and Wales Cricket Board |
|---|---|
| Cricket format | Twenty20 |
| Tournament format(s) | Group stage and knockout |
| Champions | Somerset Sabres (1st title) |
| Participants | 18 |
| Most runs | Owais Shah (410 for Middlesex)[1] |
| Most wickets | Nayan Doshi (17 for Surrey)[2] |
The 2005 Twenty20 Cup was the third edition of the T20 Blast formerly known as the Twenty20 Cup competition for English and Welsh county clubs. The finals day took place on 30 July at The Oval, and was won by the Somerset Sabres.