| Administrator: | England and Wales Cricket Board |
| Cricket Format: | Limited overs cricket (40 overs per innings) |
| Tournament Format: | League system |
| Champions: | Essex Eagles |
| Count: | 5 |
| Participants: | 18 |
| Previous Year: | 2005 |
| Previous Tournament: | 2005 totesport League |
| Next Year: | 2007 |
| Next Tournament: | 2007 NatWest Pro40 |
The 2006 NatWest Pro 40 league season was a 40 over English county cricket competition; colloquially known as the Sunday League. Essex Eagles won the League for the fifth time.[1]
| Team | P | W | L | T | NR | Pts | RunRate | |
|---|---|---|---|---|---|---|---|---|
| 1. Essex Eagles | 8 | 5 | 2 | 0 | 1 | 11 | 1.23 | |
| 2. Northamptonshire Steelbacks | 8 | 5 | 2 | 0 | 1 | 11 | -0.04 | |
| 3. Sussex Sharks | 8 | 5 | 3 | 0 | 0 | 10 | 0.14 | |
| 4. Nottinghamshire Outlaws | 8 | 4 | 3 | 0 | 1 | 9 | 0.07 | |
| 5. Warwickshire Bears | 8 | 3 | 4 | 0 | 1 | 7 | -0.17 | |
| 6. Lancashire Lightning | 8 | 2 | 3 | 0 | 3 | 7 | 0.41 | |
| 7. Glamorgan Dragons | 8 | 2 | 3 | 1 | 2 | 7 | -0.48 | |
| 8. Durham Dynamos | 8 | 2 | 4 | 1 | 1 | 6 | -0.31 | |
| 9. Middlesex Crusaders | 8 | 2 | 6 | 0 | 0 | 4 | -0.78 |
| = Champions | ||
| = Relegated |
| Team | P | W | L | T | NR | Pts | RunRate | |
|---|---|---|---|---|---|---|---|---|
| 1. Gloucestershire Gladiators | 8 | 6 | 2 | 0 | 0 | 12 | 0.28 | |
| 2. Worcestershire Royals | 8 | 6 | 2 | 0 | 0 | 12 | 1.03 | |
| 3. Hampshire Hawks | 8 | 5 | 2 | 0 | 1 | 11 | 0.55 | |
| 4. Surrey Brown Caps | 8 | 5 | 2 | 0 | 1 | 11 | 0.33 | |
| 5. Kent Spitfires | 8 | 5 | 3 | 0 | 0 | 10 | 0.78 | |
| 6. Leicestershire Foxes | 8 | 3 | 5 | 0 | 0 | 6 | 0.11 | |
| 7. Somerset Sabres | 8 | 2 | 6 | 0 | 0 | 4 | -0.84 | |
| 8. Derbyshire Phantoms | 8 | 1 | 6 | 0 | 1 | 3 | -0.86 | |
| 9. Yorkshire Phoenix | 8 | 1 | 6 | 0 | 1 | 3 | -1.46 |
| = Promoted |