Place
- Oporto, Portugal2
- Oran, Algiers2
- Orizaba, Mexico2
- Ormus, Persian Gulf2
- Osnabrück, Hanover2
- Ostimuri, Province of, Mexico2
- Oxfordshire, England2
- Padua, Italy2
- Palermo, Sicily2
- Pangasinan, Philppines2
- Peregil Island, Morocco2
- Pernambuco, Brazil2
- Philadelphia, Pennsylvania2
- Philippsburg, on the Rhine, Germany2
- Pisco, Peru2
- Poland, Europe2
- Port San Joseph, Patagonia2
- Porto Rico, West Indies2
- Ramillies, Brabant2
- Ratisbon, Bavaria2