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- Oak: Hamadryad, member of Aslan's council (MN)
- Octesian, Lord: One of the Seven Great Lords of Narnia, died on Dragon Isle (VDT)
- Olvin: Called Fair Olvin; legendary warrior of Archenland, turned Pire to stone (HHB)
- Obentinus: Faun, dances for Caspian X (PC)
- Orruns: Faun (SC)
- Oscuns: Faun, dances for Caspian X (PC)
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