| Noble Elven Bow - Miser | 4817 |
| Noble Elven Bow Shaft | 2086 |
| Noble Enhancement Stone | 14052 |
| Noblesse Tiara | 7694 |
| Non-Ornamented Duel Supplies | 13782 |
| Nonliving Nucleus | 9817 |
| Nonliving Nucleus (A-Grade) | 8169 |
| Nonliving Nucleus (B-Grade) | 8168 |
| Nonliving Nucleus (C-Grade) | 8167 |
| Norman's Letter | 1106 |
| Norman's Receipt | 3126 |
| Nyakuri's Letter | 2828 |
| Octo Claw | 15563 |
| Octo Claw - Critical Stun | 15845 |
| Octo Claw - Focus | 15846 |
| Octo Claw - Health | 15844 |
| Octo Claw {PvP} | 15932 |
| Octo Claw {PvP} - Critical Stun | 15957 |
| Octo Claw {PvP} - Focus | 15958 |
| Octo Claw {PvP} - Health | 15956 |
| Offering | 7522 |
| Offering | 7523 |
| Offering | 7524 |
| Offering | 7525 |
| Official Letter | 1019 |
| Ogre Power Gauntlets | 607 |
| Ogre Power Gauntlets Part | 1963 |
| Ohpdian Lance | 5180 |
| Ol Ariosh's Cellular Tissue | 13831 |
| Ol Mahum Captain's Head | 4249 |
| Ol Mahum Spirit Ore | 2654 |
| Ol Mahum's Money | 2826 |
| Old Account Book | 3241 |
| Old Bronze Sword | 1157 |
| Old Hilt | 4271 |
| Old Key | 4270 |
| Old Order | 2799 |
| Old Treasure Map | 10330 |
| Olympiad 10 Consecutive Wins Confirmation | 17246 |
| Olympiad 2 Consecutive Wins Confirmation | 17244 |
| Olympiad 5 Consecutive Wins Confirmation | 17245 |
| Olympiad Class Battle Certificate | 17243 |
| Olympiad Class-Free Battle Certificate | 17242 |
| Olympiad Match 10 Participation Certificate | 17240 |
| Olympiad Team Event Certificate | 17241 |
| Olympiad Token | 13722 |
| Olympiad Treasure Chest | 17169 |
| Olympiad Warrior's Earring | 13754 |
| Olympiad Warrior's Necklace | 13753 |
| Olympiad Warrior's Ring | 13752 |
| Omen Beast's Eye | 1081 |
| Omen Beast's Eye Earring | 851 |
| Omen Beast's Eye Earring Gemstone | 1905 |
| Onyx | 1339 |
| Ophidian Panzer Coat | 5174 |
| Orange Colored Fish Scale | 8357 |
| Orange Fat Fish | 6452 |
| Orange Nimble Fish | 6450 |
| Orange Philosopher's Stone | 9173 |
| Orange Philosopher's Stone Transmutation Circle | 9164 |
| Orange Ugly Fish | 6451 |
| Orb of Abyss | 1270 |
| Orb of Binding | 7595 |
| Orc Amulet | 752 |
| Orc Amulet | 1114 |
| Orc Amulet | 1116 |
| Orc Grave Goods | 8088 |
| Orc's Necklace | 1085 |
| Orc's Necklace | 1115 |
| Orc's Necklace | 1117 |
| Orcish Arrowhead | 963 |
| Orcish Circlet | 9394 |
| Orcish Glaive | 298 |
| Orcish Glaive - Anger | 4837 |
| Orcish Glaive - Critical Stun | 4838 |
| Orcish Glaive - Towering Blow | 4839 |
| Orcish Glaive Blade | 2075 |
| Orcish Poleaxe | 299 |
| Orcish Poleaxe - Critical Stun | 4852 |
| Orcish Poleaxe - Towering Blow | 4853 |
| Orcish Poleaxe - Wide Blow | 4854 |
| Orcish Poleaxe Blade | 2122 |
| Orcish Sword | 67 |
| Order of Sorius | 2815 |
| Orders | 9762 |
| Ordinary Magic Rune Clip Iron Belt - HP Recovery | 14923 |
| Ordinary Magic Rune Clip Iron Belt - MP Recovery | 14931 |
| Ordinary Magic Rune Clip Mithril Belt - HP Recovery | 14927 |
| Ordinary Magic Rune Clip Mithril Belt - MP Recovery | 14935 |
| Oren Dark Resistance Necklace | 13743 |
| Oren Dark Royal Guard Necklace | 15285 |
| Oren Disguise Scroll | 13680 |
| Oren Earth Resistance Ring | 14595 |
| Oren Earth Royal Guard Ring | 15294 |
| Oren Guard Earring | 14804 |
| Oren Protection Earring | 14667 |
| Oren Supply Box - Belt - Grade B, C | 13716 |
| Oren Supply Box - Belt - Grade S, A | 14552 |
| Oren Supply Box - Magic Ornament - Grade S, A | 14896 |
| Oren Supply Box - Magic Pin - Grade B, C | 13698 |