All 8 boys' names beginning with O that have a popularity page, ranked by all-time births (1952–2025). Looking for Girls names starting with O?
| # | Name | Total babies | 2025 rank |
|---|---|---|---|
| 1 | Oliver | 33,576 | #2 |
| 2 | Oscar | 14,135 | #15 |
| 3 | Owen | 4,712 | #118 |
| 4 | Ollie | 455 | #110 |
| 5 | Oakley | 386 | #101 |
| 6 | Orlando | 57 | – |
| 7 | Otis | 46 | – |
| 8 | Odin | 22 | – |