Regions of Ireland
- Pedlars Cross Roads
- Peafield House
- Paulsworth
- Paulstown Castle
- Pass of Kilbride
- Pass House
- Passage West
- Passage East
- Partry Mountains
- Partry
- Parteen Villa
- Parsonstown House
- Parkmore Point
- Park
- Paradise House
- An Da Chich Anann (An Chioch Thoir)
- Palmerstown House
- Palmerstown House
- Palmerstown Bridge
- Palmerston
- Pallaskenry
- Pallas House
- Pallasgreen
- Pallas Grean
- Pallas
- Pallas
- Palatine
- Palace House
- Palace East Junction
- Pakenham Hall
- Painestown
- Paddock
- Oyster Haven
- Owveg River
- Owvane River
- Ow River
- Owgarriff River
- Owey Sound
- Owey Island
- Owenwee River
- Owenur River
- Owentocker River
- Owentaraglin River
- Owenslieve River
- Owenroe River
- Owenreagh River
- Owenogarney River
- Owennayle River
- Owenmore River
- Owenmore River
- Owenmore River
- Owenmore River
- Owenmore River
- Owenkillew River
- Owenkeal River
- Oweniny River
- Owenglin River
- Owengarve Lough
- Owengar River
- Owengarriff River
- Owenea River
- Owenduff River
- Owenduff
- Owendalulleegh River
- Owencashla River
- Owencarrow River
- Owenbrin River
- Owenboy River
- Owenbeg River
- Owenboy River
- Owenbeg River
- Owenbeg River
- Owenavorragh River
- Owenator River
- Owenass River
- Lough Owel
- Avoca River
- Vale of Avoca
- Avoca
- Ovens
- Lough Ouver
- Ourtnagapple
- Oulart
- Oughterard
- Lough Oughter
- Oughter
- Oughtarnid
- O’Sullivans Cascade
- Orthon Island
- Ormond View
- Oristown
- Oranmore Bay
- Oranmore
- Oran
- Oorid Lough
- Oolagh River
- Oola
- Onaght
- Omey Island
- Omeath
- O’Loughlins Castle
- Ollatrim River
- Old Twopothouse Cross Roads
- Old Town
- Oldtown
- Old Town
- Oldtown House
- Old Ross
- Oldleighlin
- Old Kilcullen
- Old Head of Kinsale
- Oldhead House
- Old Head
- Oldglass
- Oldcourt
- Oldcourt
- Oldchapel
- Oldcastle
- Oldcastle
- Oldbridge
- Oily River
- Oilgate
- Lough O’Grady
- Oghil House
- Oghil
- Kilfree O’Flynn
- Uíbh Fhailí
- O’Deas Castle
- O’Callaghansmills
- O’Briensbridge
- Oatfield House
- Oakport Lough
- Oakport House
- Oakpark House
- Oak Park
- Oakleypark
- Oakley Park
- Oakley House
- Oaklands House
- Oakhampton House
- Oakfield House
- Nursetown
- Nurney
- Nurney
- Nowen Hill
- Noughaval
- Nose of Howth
- North Wall Station
- North Sound
- North Ring
- Northlands
- Northgrove
- North Bull Island
- River Nore
- Port Noo
- Nohaval
- Nobber
- Ninemilehouse
- River Nier
- Nicker
- New Twopothouse Village
- Newtown Trim
- Newtown Sandes
- Newtown Mount Kennedy
- Newtown Monasterboice
- Newtownlynch
- Newtown Lodge
- Newtown House
- Newtown House
- Newtown House
- Newtown Gore
- Newtownfortescue
- Newtown Forbes
- Newtown Daly
- Newtown Cunningham
- Newtown Castle
- Newtownburke
- Newtownanner House
- New Town
- Newtown
- New Town
- Newtown
- Newtown
- Newtown
- Newtown
- Newtown
- Newtownshandrum
- Newtown
- Newtown
- Newtown
- Newstone House
- New Ross
- New Quay
- Newport River
- Newport Bay
- Newport
- Newport
- Newpark House
- Newpark
- Newmills