| Girl | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Boy | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Girl | ||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Boy | ||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Name | Meaning | Gender | Numerology |
|---|---|---|---|
| Obelia | Pillar of Strength | Girl | 8 |
| Obelie | Pointed Pillar | Girl | 3 |
| Oceana | Form of Oceanus, From the Sea | Girl | 3 |
| Oceane | The Ocean Sea | Girl | 7 |
| Ocilia | Rich | Girl | 4 |
| Ocypete | A Harpy | Girl | 8 |
| Odel | Song | Girl | 9 |
| Odela | Rich Song | Girl | 1 |
| Odele | Rich, Harmonious, Song | Girl | 5 |
| Odelet | Little Singer | Girl | 7 |
| Odelette | Place Name, Woad Hill | Girl | 5 |
| Odelia | Little Wealthy One, Praise God | Girl | 1 |
| Odelina | Little Wealthy One Elfin Spear | Girl | 6 |
| Odelinda | Little Wealthy One | Girl | 1 |
| Odell | Woad Hill Place Name Rich Song | Girl | 3 |
| Odella | Little Wealthy One, Place Name | Girl | 4 |
| Odelle | Rich Harmonious Song | Girl | 8 |
| Odelyn | Little Wealthy One | Girl | 3 |
| Odessa | The Odyssey, Wrathful | Girl | 9 |
| Odetta | Melody Wealthy | Girl | 2 |
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| Odysseia | Wrathful | Girl | 7 |
| Oenone | Lover of Paris | Girl | 5 |
| Ofelia | To Help Aid | Girl | 3 |
| Ofilia | Help | Girl | 7 |
| Oighrig | Well Spoken Pleasant Speech | Girl | 1 |
| Oizys | Misery Woe Distress | Girl | 4 |
| Oksana | Woman of Hospitality | Girl | 7 |
| Olalla | Well-born Good Talker | Girl | 8 |
| Olaya | Well-spoken | Girl | 9 |
| Oleander | An Evergreen Tree | Girl | 2 |
| Oleisia | Protector of Man | Girl | 7 |
| Olena | Torch of Light Moon Glow | Girl | 2 |
| Olesia | Defender of Mankind | Girl | 7 |
| Oleta | Winged, Verity, Truth | Girl | 8 |
| Olethea | Variant of Alethea, Truth, Honest | Girl | 3 |
| Olexa | Defender of Mankind | Girl | 3 |
| Olga | holy | Girl | 8 |
| Olimpia | From Mount Olympus | Girl | 3 |
| Olimpias | From Mount Olympus | Girl | 4 |
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| Olivia | Symbol of Peace, Olive Tree | Girl | 5 |
| Olympe | From Olympus | Girl | 5 |
| Olympia | Mountain of the God | Girl | 1 |
| Olympie | From Mount Olympus | Girl | 5 |
| Olypme | From Mount Olympus | Girl | 5 |
| Omega | Last Final End | Girl | 5 |
| Omphale | A Queen of Lydia | Girl | 7 |
| Ondreea | Courageous Womanly Warrior | Girl | 8 |
| Onella | Light Torch | Girl | 5 |
| Onix | Black Stone | Girl | 8 |
| Onyx | Black Stone | Girl | 6 |
| Oona | Unity Pure United | Girl | 9 |
| Oonagh | Pure Lamb One Unity | Girl | 6 |
| Oonah | Pure Virginal | Girl | 8 |
| Ophelia | Helpful Woman, Helper, Serpentine | Girl | 3 |
| Ophelie | Serpentine Help | Girl | 7 |
| Ophira | Gold | Girl | 4 |
| Oprah | One who Turned her Back, Fawn | Girl | 4 |
| Orane | Rising Green | Girl | 8 |
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| Orestia | Mountain Goddess | Girl | 6 |
| Oreta | Woman of Virtue | Girl | 5 |
| Oretha | Woman of Virtue Virtuous | Girl | 4 |
| Oretta | Woman of Virtue | Girl | 7 |
| Orette | Woman of Virtue | Girl | 2 |
| Oria | Dawning From the Mountain | Girl | 7 |
| Oriana | Golden One, Dawning, Sun Ray | Girl | 4 |
| Orianna | Golden Dawning | Girl | 9 |
| Orie | Dawn A Corn Cake | Girl | 2 |
| Orina | Beautiful, Flower, Dawn, Peaceful | Girl | 3 |
| Orion | A Hunter in Greek Mythology | Girl | 8 |
| Orithya | Mountain Goddess | Girl | 6 |
| Orlain | Pledge | Girl | 6 |
| Orofrigia | Phrygian Gold | Girl | 8 |
| Orosia | Eloquent | Girl | 5 |
| Orphillia | Help | Girl | 1 |
| Oryna | Peace | Girl | 1 |
| Osanna | Praise | Girl | 1 |
| Ossa | Divine Law | Girl | 9 |
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