| Orange Pigment | — | — | — | 100 |
 Orange Pigment | — | — | — | 100 |
| Orange Pigment | — | — | — | 100 |
 Orange Key | — | — | — | — |
 Orange Jade | — | — | — | 160 |
 Orange Firework | — | — | 1 | 10 |
 Oracle XVIII | — | — | — | — |
| Oracle XVII | — | — | — | — |
| Oracle XVI | — | — | — | — |
| Oracle XV | — | — | — | — |
| Oracle XIX | — | — | — | — |
| Oracle XIV | — | — | — | — |
| Oracle XIII | — | — | — | — |
| Oracle XII | — | — | — | — |
| Oracle XI | — | — | — | — |
| Oracle X | — | — | — | — |
| Oracle VIII | — | — | — | — |
| Oracle VII | — | — | — | — |
| Oracle VI | — | — | — | — |
| Oracle V | — | — | — | — |
 Oracle's Cap | Arcane Headgear | 131 | 15 | 35,370 |
| Oracle's Cap | Arcane Headgear | 131 | 15 | 39,240 |
| Oracle's Cap | Arcane Headgear | 131 | 15 | 43,920 |
| Oracle IX | — | — | — | — |
| Oracle IV | — | — | — | — |
| Oracle III | — | — | — | — |
| Oracle II | — | — | — | — |
| Oracle I | — | — | — | — |
 Oracle | — | 90 | 1 | 1,000 |
 Opal | — | — | — | — |
 Omniblade | Magic Sword | 114 | 13 | 59,280 |
| Omniblade | Magic Sword | 114 | 13 | 73,560 |
| Omniblade | Magic Sword | 114 | 13 | 65,680 |
 Old Token | — | — | — | — |
 Old Silver Case | — | — | — | — |
 Old Horse's Remains | — | — | — | — |
 Old Golden Case | — | — | — | — |
 Old Chief's Reply | — | — | — | — |
 Old Chief's Advice | — | — | — | — |
 Old Case | — | — | — | — |
 Old Bow | — | — | — | — |
 Old Book Page | — | — | — | 100 |
 Old Bamboo Flute | — | — | — | — |
 Oilpaper Umbrella | — | — | — | 5,000 |
 Oil of Faerie Fish | — | — | — | — |
 Ogre Seawolf King Pet Egg | — | — | 34 | 1 |
| Ogre Razortooth Pet Egg | — | — | 32 | 1 |
 Ofotis Orb | — | — | — | 400 |
 Officer's Uniform | Body Wear (Fashion) | 30 | 5 | 1,000 |
 Officer's Pants | Leg Wear (Fashion) | 30 | 8 | 1,000 |