HM Prison Dartmoor
| Location | Princetown, Devon |
|---|---|
| Coordinates | 50°32′59″N 3°59′46″W / 50.54972°N 3.99611°W |
| Security class | Adult Male/Category C |
| Population | 640 (as of January 2016) |
| Opened | 1809 |
| Closed | 2024 |
| Managed by | HM Prison Services |
| Governor | Steve Mead |
| Website | Dartmoor at justice.gov.uk |
HM Prison Dartmoor is a Category C men's prison, located in Princetown, high on Dartmoor in the English county of Devon. Its high granite walls dominate this area of the moor. The prison is owned by the Duchy of Cornwall, and is operated by His Majesty's Prison Service.
The prison closed temporarily in 2024 for radon mitigation and investigation works.
Dartmoor Prison was given Grade II heritage listing in 1987.