| 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 |
|---|---|---|---|
| Octavian | the eighth | Boy | 4 |
| Octavo | the eighth | Boy | 4 |
| Odysseus | angry | Boy | 1 |
| Oistin | venerable | Boy | 5 |
| Ole | ancestors heir | Boy | 5 |
| Oleg | holy | Boy | 3 |
| Olin | ancestors heir | Boy | 5 |
| Oliver | elf army | Boy | 9 |
| Olivier | olive tree | Boy | 9 |
| Ollie | elf army | Boy | 8 |
| Olson | son of Olaf | Boy | 3 |
| Oma | giver of life | Boy | 2 |
| Omar | long lived | Boy | 2 |
| Omarion | Combination of Omar and -ion | Boy | 4 |
| On | peace | Boy | 2 |
| Onan | strength, power | Boy | 8 |
| Onofre | peace warrior | Boy | 1 |
| Orestes | mountain dweller | Boy | 2 |
| Orli | you are my light | Boy | 9 |
| Oro | gold | Boy | 3 |
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| Orsin | bear cub | Boy | 3 |
| Osama | lion-like | Boy | 4 |
| Osborn | god bear | Boy | 2 |
| Osbourne | god bear | Boy | 1 |
| Oscar | deer lover | Boy | 2 |
| Osher | happiness | Boy | 2 |
| Osias | salvation | Boy | 9 |
| Osman | tender youth | Boy | 8 |
| Osmond | God protector | Boy | 8 |
| Oswald | God rule | Boy | 2 |
| Othello | God rule | Boy | 6 |
| Otis | wealth | Boy | 9 |
| Otto | wealth | Boy | 7 |
| Owen | desire born | Boy | 3 |
| Ozer | Gods helper | Boy | 1 |