| Dates | 30 Apr – 17 September 1975 |
|---|---|
| Administrator | England and Wales Cricket Board |
| Cricket format | First-class cricket |
| Tournament format | League system |
| Champions | Leicestershire (1st title) |
| Participants | 17 |
| Matches | 170 |
| Most runs | Geoffrey Boycott, (Yorkshire) 1,891 |
| Most wickets | Peter Lee, (Lancashire) 107 |
The 1975 County Championship was the 76th officially organised running of the County Championship. Leicestershire won their first Championship title.
| Team | P | W | L | D | Bat | Bowl | Pts | |
|---|---|---|---|---|---|---|---|---|
| 1 | Leicestershire | 20 | 12 | 1 | 7 | 61 | 59 | 240 |
| 2 | Yorkshire | 20 | 10 | 1 | 9 | 56 | 68 | 224 |
| 3 | Hampshire | 20 | 10 | 6 | 4 | 51 | 72 | 223 |
| 4 | Lancashire | 20 | 9 | 3 | 8 | 57 | 72 | 219 |
| 5 | Kent | 20 | 8 | 4 | 8 | 59 | 70 | 209 |
| 6 | Surrey | 20 | 8 | 3 | 9 | 55 | 67 | 202 |
| 7 | Essex | 20 | 7 | 6 | 7 | 61 | 67 | 198 |
| 8 | Northamptonshire | 20 | 7 | 9 | 4 | 40 | 72 | 182 |
| 9 | Glamorgan | 20 | 7 | 8 | 5 | 45 | 66 | 181 |
| 10 | Worcestershire | 20 | 5 | 6 | 9 | 55 | 63 | 168 |
| 11 | Middlesex | 20 | 6 | 7 | 7 | 45 | 59 | 164 |
| 12 | Somerset | 20 | 4 | 8 | 8 | 51 | 65 | 156 |
| 13 | Nottinghamshire | 20 | 3 | 9 | 8 | 59 | 67 | 156 |
| 14 | Warwickshire | 20 | 4 | 10 | 6 | 48 | 65 | 153 |
| 15 | Derbyshire | 20 | 5 | 7 | 8 | 33 | 69 | 152 |
| 16 | Gloucestershire | 20 | 4 | 10 | 6 | 43 | 62 | 145 |
| 17 | Sussex | 20 | 2 | 13 | 5 | 37 | 62 | 119 |