- Rock Island
- Ragged Island
- Rand
- Randolph
- Randolph Hill
- Rattlesnake Island
- Raymond
- Redhead Island
- Redstone
- Reeds Ferry
- Richmond
- Rim Junction
- Rindge
- Rings Corner
- Rivercrest
- Riverdale
- Riverhill
- Riverside
- Riverton
- Robinson Corner
- Roby
- Rochester
- Rockingham
- Rockwood
- Rockywold
- Rogers Crossing
- Roland Park
- Rollinsford
- Rollinsford Station
- Round Island