Lord of the Rings Online Accomplishments - O
| Name | Effects | Zone |
| Of Glories Long Past | Empathy +1, Charity +1, Loyalty +2 | North Downs |
| Of Glories Long Past (advanced) | Charity +1 | |
| Of Glories Long Past (Final) | Loyalty +1 | |
| On the Patterns of Wind and Rain | Perfect Imagery +1 | |
| Opportunist | Opportunist | |
| Orc Slayer (Advanced) (Lothlórien) | Innocence +1 | Lothlórien |
| Orc Slayer (Lothlórien) | Title: Champion of Lothlórien | Lothlórien |
| Orc-slayer | Title: Hero of the North Downs, Justice +1 | North Downs |
| Orc-slayer (Advanced) (Angmar) | Zeal +1 | |
| Orc-slayer (Advanced) (Moria) | Determination +1 | |
| Orc-slayer (Angmar) | Title: Bane of the Orcs, Zeal +1 | Angmar |
| Orc-Slayer (Bree-Land) | Title: Defender of Bree-Land, Valour +1 | Bree-Land |
| Orc-Slayer (Lone Land) | Title: Champion of the Lone Lands, Valour +1 | Lone Land |
| Orc-slayer (Moria) | Title: Orc-foe | |
| Orcs of the Forge | Title: Douser of Flames | |
| Orcs of the Forge (Advanced) | Zeal +1 | |
| Orcs of the Sixteenth Hall | Title: the Hearty | |
| Orcs of the Sixteenth Hall (Advanced) | Wisdom +1 | |
| Overseers of the Forge | Title: Forge-breaker, Determination +1 | |
| Overwhelming Odds | Overwhelming Odds | |
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