| 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 |
|---|---|---|---|
| Oates | Son of Otto, Variant of Odo | Boy | 6 |
| Obed | A Servant, Workman | Boy | 8 |
| Oberon | Elf Ruler High-born and Bearlike | Boy | 6 |
| Oberron | Highborn Bearlike | Boy | 6 |
| Obert | Wealthy Bright | Boy | 6 |
| Oberto | Noble and Bright | Boy | 3 |
| Obrecht | Known for his Inheritance | Boy | 8 |
| Octavian | Born Eighth | Boy | 4 |
| Octavio | Eighth Child | Boy | 4 |
| Octavius | Eighth Born | Boy | 2 |
| Odalis | Riches | Boy | 6 |
| Odall | Rich Song | Boy | 8 |
| Odalric | TBD | Boy | 8 |
| Odbart | Wealthy | Boy | 6 |
| Oddie | Wealth Variant of Odo | Boy | 1 |
| Ode | Born on the Road | Boy | 6 |
| Odell | Otter, Wealthy, Song, Surname | Boy | 3 |
| Oden | Inspiration | Boy | 2 |
| Oderico | Powerful in Riches | Boy | 6 |
| Odhert | Wealthy | Boy | 7 |
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| Odie | Otter Song Rich | Boy | 6 |
| Odilo | Rich | Boy | 1 |
| Odin | Inspiration, Wealthy Defender | Boy | 6 |
| Odo | Name of a Bishop, Prosperous | Boy | 7 |
| Odoacro | Watches over his Inheritance | Boy | 8 |
| Odolf | Prosperous Noble Wolf | Boy | 7 |
| Odolff | Prosperous Wolf | Boy | 4 |
| Odwin | Noble Friend | Boy | 2 |
| Odysseus | Wrathful, Angry Man | Boy | 1 |
| Oeberon | Bearlike Highborn | Boy | 2 |
| Oger | TBD | Boy | 9 |
| Ogun | God of Iron | Boy | 3 |
| Oguz | Arrow | Boy | 6 |
| Okke | Wealth Fortune | Boy | 6 |
| Okko | Wealth Fortune | Boy | 7 |
| Oktay | TBD | Boy | 9 |
| Olaf | What remains of the forefathers | Boy | 7 |
| Olaff | Ancestor | Boy | 4 |
| Olaus | Ancestor | Boy | 5 |
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| Olbrecht | Famous Noble Bright | Boy | 2 |
| Oldrich | Rich Heritage | Boy | 6 |
| Oldrik | Powerful Inheritance | Boy | 6 |
| Olef | Family Descendant | Boy | 2 |
| Oleg | Holy, Sacred, Blessed, Prosperous | Boy | 3 |
| Olegario | Dominates with the Lance | Boy | 1 |
| Olen | Holy Ancestor Relic | Boy | 1 |
| Olesya | TBD | Boy | 5 |
| Oli | Courageous Elf Army | Boy | 9 |
| Olik | Rich, Powerful, Heritage | Boy | 2 |
| Olin | Holly Ancestor Hallowed | Boy | 5 |
| Olis | Powerful Strong | Boy | 1 |
| Olivar | Elf Warrior Alive Free | Boy | 5 |
| Oliver | Eleven | Boy | 9 |
| Olivier | From the Olive Tree Elf Army | Boy | 9 |
| Oliviero | An Olive Tree | Boy | 6 |
| Olle | Family Descendant Ancestor | Boy | 8 |
| Olli | Heir of the Ancestors Descendant | Boy | 3 |
| Ollie | Diminutive of Oliver Elf army Can also be a variant of Olaf Relic, ancestral heritage | Boy | 8 |
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| Olly | Elf Warrior | Boy | 1 |
| Olo | Famous in the Land | Boy | 6 |
| Olof | Ancestor Relic | Boy | 3 |
| Olov | Ancestor | Boy | 1 |
| Olric | Wolf Ruler Ruler of All | Boy | 3 |
| Oluf | Descendant | Boy | 9 |
| Olvin | Olive Tree Elf Warrior | Boy | 9 |
| Olyver | Olive Tree Elf Warrior | Boy | 7 |
| Omar | An Era, The Highest | Boy | 2 |
| Omer | Eloquent or Bundle of Grain | Boy | 6 |
| Ondrej | Manly, Brave, Strong, Masculine | Boy | 3 |
| Onfre | Peace | Boy | 4 |
| Onfroi | Peace Peaceful Hun | Boy | 5 |
| Onnan | Mariner | Boy | 4 |
| Onno | The generous | Boy | 4 |
| Onofre | Defender Fighter of Peace | Boy | 1 |
| Onofredo | Peace | Boy | 2 |
| Onofrio | Peace Peaceful Strength | Boy | 2 |
| Onur | Honourable | Boy | 5 |
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| Orazio | Timekeeper Has Good Eyesight | Boy | 3 |
| Orban | City-dweller Educated Man | Boy | 5 |
| Orbart | Wealthy | Boy | 2 |
| Orbert | Wealthy | Boy | 6 |
| Orel | Eagle Golden | Boy | 5 |
| Orell | Ore Hill | Boy | 8 |
| Orestis | Brilliant | Boy | 6 |
| Orhan | Army Commander | Boy | 2 |
| Orkun | Support Pillar | Boy | 7 |
| Orlan | From the Pointed Hill | Boy | 6 |
| Orland | Renowned in the Land | Boy | 1 |
| Orlando | Renowned in the Land | Boy | 7 |
| Orlin | Renowned in the Land | Boy | 5 |
| Orlondo | Renowned in the Land, For | Boy | 3 |
| Orman | Mariner Spear Man | Boy | 7 |
| Ormand | Red, Spear-man, Mountain of Bears | Boy | 2 |
| Ormond | Spear Defender, Spear | Boy | 7 |
| Ormonde | Mountain of Bears, Spear | Boy | 3 |
| Ormondo | Army Man Form of Herman | Boy | 4 |