P
- East Pinkeen Stream, County Dublin
- West Pinkeen Stream, County Dublin
- Piperstown Stream, County Dublin
- River Poddle, County Dublin
- Pollymounty River, County Carlow, also spelled Pollmounty or Poulmonty.
- Portrane Stream, County Dublin
- Priory Stream, County Dublin
Read more about this topic: Rivers Of Northern Ireland