1991 County Championship
The 1991 Britannic Assurance County Championship was the 92nd officially organised running of the County Championship. Essex won the Championship title.
The Championship was sponsored by Britannic Assurance for the eighth time.
Table
- 16 points for a win
- 8 points to each team for a tie
- 8 points to team still batting in a match in which scores finish level
- Bonus points awarded in the first 100 overs of the first innings
- *Batting: 150 runs - 1 point, 200 runs - 2 points 250 runs - 3 points, 300 runs - 4 points
- *Bowling: 3-4 wickets - 1 point, 5-6 wickets - 2 points 7-8 wickets - 3 points, 9-10 wickets - 4 points
- No bonus points awarded in a match starting with less than 8 hours' play remaining. A one-innings match is played, with the winner gaining 12 points.
- Position determined by points gained. If equal, then decided on most wins.
| Team | Pld | Won | Lost | Drawn | Tie | Batting bonus | Bowling bonus | Points |
| Essex | 22 | 11 | 5 | 6 | 0 | 69 | 67 | 312 |
| Warwickshire | 22 | 11 | 4 | 7 | 0 | 58 | 65 | 299 |
| Derbyshire | 22 | 9 | 5 | 8 | 0 | 46 | 68 | 258 |
| Nottinghamshire | 22 | 7 | 5 | 10 | 0 | 64 | 69 | 245 |
| Surrey | 22 | 8 | 6 | 8 | 0 | 47 | 66 | 241 |
| Kent | 22 | 6 | 3 | 12 | 1 | 50 | 55 | 209 |
| Worcestershire | 22 | 6 | 4 | 12 | 0 | 54 | 59 | 209 |
| Lancashire | 22 | 6 | 9 | 7 | 0 | 60 | 49 | 205 |
| Hampshire | 22 | 5 | 7 | 10 | 0 | 57 | 56 | 193 |
| Northamptonshire | 22 | 5 | 6 | 11 | 0 | 55 | 54 | 189 |
| Sussex | 22 | 4 | 3 | 14 | 1 | 57 | 60 | 189 |
| Glamorgan | 22 | 5 | 5 | 12 | 0 | 50 | 57 | 187 |
| Gloucestershire | 22 | 5 | 10 | 7 | 0 | 42 | 53 | 175 |
| Yorkshire | 22 | 4 | 6 | 12 | 0 | 58 | 37 | 159 |
| Middlesex | 22 | 3 | 9 | 10 | 0 | 48 | 63 | 159 |
| Leicestershire | 22 | 3 | 8 | 11 | 0 | 46 | 53 | 147 |
| Somerset | 22 | 2 | 5 | 15 | 0 | 66 | 45 | 143 |