Princetown may refer to:
- Princetown, a village on Dartmoor, Devon, England
- Princetown Prison, former name of HM Prison Dartmoor
- Princetown, Caerphilly, a location in Caerphilly County Borough, Wales
- Princeton, Kentucky, founded as Princetown
- Princetown, New York, a town in Schenectady County, New York, United States
- Princetown, Prince Edward Island, the former shire town of Prince County, Prince Edward Island, Canada
- Princetown, Victoria, a small town on the Great Ocean Road in Victoria, Australia