O
- Oakendale (6)
- Oakstaff (2)
- Oakstalk Woods (3)
- Oakwall (8)
- Oasis of Blood (1)
- Oasis of the Phoenix (1)
- Oathbreakers Woods (1)
- O Bastião das Tartarugas (1)
- O Bastião das Tartarugas (Vilaverdan Colony) (1)
- Obdaa (2)
- Obechek (3)
- Ober’s Mimbur (4)
- Obscurata (2)
- Obsidian (2)
- Oceania (14)
- Oceansend (22)
- Oceansend Marshes (8)
- Ochalea (19)
- Ocotepec (1)
- Octave (2)
- Ode (2)
- Odharjokull (2)
- Odiyana (1)
- Odom (2)
- Oethrûn Plateau (2)
- Ogamai (1)
- Og Bay (1)
- Ogmna (2)
- Ogremoor (1)
- Ogrepits Ridge (3)
- Ogres (2)
- Ogresfell Keep (2)
- Ogres’ Trail (3)
- Ogre Tusk (2)
- Okadia (1)
- Okwonga Lowlands (2)
- Ol-ömoi (1)
- Olarh (1)
- Olathis (4)
- Old Averoigne (2)
- Old Caves (1)
- Old Docket River (1)
- Old Firemouth (3)
- Old Fort (1)
- Old Mill (1)
- Old Orzafeth (1)
- Old Pyramids (3)
- Oldsbury-Upon-Blythe (6)
- Olgar (3)
- Olgyerth (1)
- Ollinoico (1)
- Olmshavn (1)
- Oltania (1)
- Oltar Island (3)
- Oltec Colonies (1)
- Oltec Hills (3)
- Omechuiatzin (1)
- Omens’ Rock (1)
- Omepochtecatl (1)
- Omnipotenta (2)
- Omsh (1)
- Ongalithion (1)
- Oodnatta (1)
- Open Isle (4)
- Oph-da (1)
- Opher (1)
- Opinicus Lake (3)
- Orbs-Vigil (1)
- Orcs (5)
- Orcus Dominicus (1)
- Orcus Rex (1)
- Orc Village (6)
- Orc’s Chin Cape (3)
- Orc’s Head Island (1)
- Orc’s Head Peninsula (14)
- Orderlies Bridge (2)
- Order of the Claw (3)
- Order of the Eye (2)
- Order of the Fang (2)
- Order of the Heart (3)
- Order of the Wing (3)
- Oreggiano (1)
- Orfil (3)
- The Organ Pipes (2)
- Oriflame Lake (1)
- Orimul (3)
- Orl Bridge (2)
- Orleth (2)
- Orlsmouth (2)
- Orminandur (The Cold Forest) (1)
- Ormincarith (Cold River) (1)
- Ormyr Tower (3)
- Orol Island (3)
- Oroul Hills (1)
- Orwick (3)
- Orzetha (1)
- Orzif River (1)
- Osh-Gobol River (2)
- Ossamva (1)
- Ostbergen (3)
- Ostbruck (1)
- Ostfold Scarp (2)
- Ostland (31)
- Ostmanhaven (3)
- Ostmark (3)
- Ostrav (2)
- Ostrita River (1)
- Ostzee (2)
- Oth Island (3)
- Oth Lake (1)
- Othmar (2)
- Outer Banks (1)
- Outer Planes (5)
- Outer World (4)
- Overland Trade Route (1)
- Owldive Tower (3)
- Oxhill (1)
- Oziloco (1)
- Ozomatlican (1)
- Ozungan Plateau (7)