- Oaklynn - Oak Lake or Lake of wisdom and hospitality (English)
- Ocean - Ocean (English)
- Oceana - Ocean (Greek)
- Océane - Ocean (French)
- Odele - song (English from Greek)
- Odelia - I will thank YHWH (Hebrew)
- Odette - wealth, fortune (French)
- Odeya - I will thank YHWH (Hebrew)
- Ofélia - help, advantage (Portuguese)
- Olia - holy from Olga (Russian) or diminutive of Magnolia
- Olwen - white footprint (Welsh)
- Ona - wave (Catalan)
- Ophelia - help, advantage (Greek)
- Orabella - prayerful, golden-beautiful (latin, esperanto)
- Oriana - golden, dawn (Italian, Spanish)
- Orianne - golden, dawn (French)
- Orla - golden ruler (Irish)
- Otilia - wealth, fortune (Romanian, Spanish)
- Ottilie - wealth, fortune (German)
feb 19 2022 ∞
feb 19 2022 +
feb 19 2022 +