Cotman, John
| Title | Mr |
| Forenames | John |
| Surname | Cotman |
| Gender | m |
| Role | Mill owner |
| Address | Speltham Mill, Hambledon |
| Region | Hampshire |
| Country | United Kingdom |
| Start date | 1780-01 |
| End date | 1800 |
| Original document | Windmills of Hampshire and the Isle of Wight |
| Compiler | Pru Barrett |
| Notes | Mill built around 1780 on land John inherited from uncle Thomas. Before long he had surrendered land and mill to the Bishop and new tenant found. |