| Ocmas | Tarlanor | 1655 | Guard commander at the governor's palace in Lossal | ||||
| Octavian, Senator | Erlyid | 1601 | Flamboyant, handsome, popular, very rich. Sister Octavia a great beauty | ||||
| Odimer | Tzallis | 2100 | Landlord of the Leaping Throne | ||||
| Odiran Trapcheater | Dalaghendor | 1655 | Master Thief of Nasirolan | ||||
| Odirya | Sigil | 1608 | Rapist located and captured by the White Rat, Surya and Hildraft | ||||
| Odius Spearfoot | Tarlanor | 1655 | Friend of Crastinuc and early adopter of the faith of Sabath in Lossal. | ||||
| Olidammara | God | - | Erlyid God (Rogues, tricksters, luck) | ||||
| Olonarth | Tzallis | 2100 | Dragon Cultist in Tzallis | ||||
| Oralor | Ndrall Mountains | - | Hill dwarf city in the Ndrall Mountains | ||||
| Oramar Foxdreamer | Kordasa | 1608 | Paladin of Kord Triumphant, provided Surya with Durandana for binding Zabryat | ||||
| Orc-Land | Orc-Land | - | Southern foothills of the Erean Mts, once elf-controlled, granted to the fugitive orcs by the Erlyid | ||||
| Orcish | Language | - | Language of orcs and goblins | ||||
| Orcs | Orc | - | Tough, vile and agressive humanoid race | ||||
| Orcus | Fiend | - | Lord of the Undead, Demon Prince and Lord of Thanatos | ||||
| Orcus, the Cult Of | Fiend | - | Followers and worshipers of Orcus | ||||
| Order of the Golden Fist | Erlyid | - | Pelor's principal College of Paladins | ||||
| Order of the Red Flower | Stryre | 1818 | Knightly order sponsored by Belisama | ||||
| Oret | Oret | - | Northern land, plunged into anarchy since the Slaying, absorbed into New Tellare and Dalaghendor | ||||
| Orthrys | Planes | - | Layer of Carceri | ||||
| Orwin | Orwin | - | Northern land, now divided between Dalaghendor and wasteland | ||||
| Osoketa | Tarlanor | 1200 | Last High Priestes of Shushkrah in Morglas | ||||
| Oterto | Tellare | 1601 | Small village in South Tellare | ||||
| Outlands | Planes | - | A planar region, part of the Outer Planes but seperate from the Wheel of the God Planes. |