Letter O Boy Baby Names 2026
Oliver dominates 'O' names, followed by Owen and Oscar.
| Name | Number of Births |
|---|---|
| Oliver | 14,939 |
| Owen | 7,190 |
| Oscar | 1,620 |
| Omar | 1,333 |
| Otto | 1,241 |
| Orion | 1,012 |
| Onyx | 881 |
| Oakley | 688 |
| Odin | 604 |
| Ozzy | 548 |
| Otis | 422 |
| Omari | 397 |
| Ozias | 381 |
| Ocean | 375 |
| Orlando | 275 |
| Oziel | 229 |
| Ollie | 207 |
| Osiris | 200 |
| Osman | 181 |
| Oren | 174 |
| Oakland | 160 |
| Octavio | 154 |
| Osvaldo | 130 |
| Orson | 126 |
| Osiel | 123 |
| Ozzie | 123 |
| Obadiah | 104 |
| Oskar | 93 |
| Orhan | 92 |
| Oziah | 87 |
| Olin | 86 |
| Orin | 85 |
| Oslo | 78 |
| Ori | 76 |
| Oaklee | 75 |
| Oden | 74 |
| Obed | 72 |
| Octavius | 72 |
| Omer | 70 |
| Oswald | 67 |
| Olsen | 66 |
| Om | 66 |
| Oaklen | 62 |
| Orrin | 62 |
| Oak | 59 |
| Osmar | 59 |
| Oakes | 56 |
| Oshea | 54 |
| Osiah | 54 |
| Olivier | 52 |
For 2025, the data reveals that Oliver stands out as the overwhelmingly most popular boy baby name starting with the letter O in the United States, recording an impressive 14,939 births. Following at a significant distance, Owen secured the second spot with 7,190 births, while Oscar completed the top three with 1,620 new babies. These leading names demonstrate a clear hierarchy of popularity, with a substantial drop-off in numbers after the top two, although a variety of other 'O' names such as Omar, Otto, and Orion also show notable popularity.
Data Source: USA Social Security Administration