This is a list of the most common boy names starting with the letter O, based on babies born in the United States in the year 2023.
| Name | Births |
|---|---|
| Oliver | 14,741 |
| Owen | 7,985 |
| Oscar | 1,693 |
| Omar | 1,306 |
| Otto | 1,191 |
| Onyx | 1,069 |
| Odin | 897 |
| Orion | 861 |
| Oakley | 799 |
| Ozzy | 526 |
| Omari | 495 |
| Ocean | 465 |
| Otis | 417 |
| Orlando | 329 |
| Osiris | 238 |
| Osman | 221 |
| Ozias | 217 |
| Ollie | 199 |
| Osiel | 178 |
| Osvaldo | 151 |
| Oakland | 148 |
| Oren | 147 |
| Octavio | 139 |
| Ozzie | 135 |
| Orson | 132 |
| Oziel | 126 |
| Oskar | 124 |
| Obadiah | 110 |
| Oaklee | 107 |
| Oaklen | 105 |
| Oden | 89 |
| Octavius | 88 |
| Oslo | 85 |
| Obed | 84 |
| Olin | 81 |
| Ori | 74 |
| Orhan | 69 |
| Oak | 67 |
| Oswald | 64 |
| Osmar | 64 |
| Omer | 64 |
| Om | 64 |
| Oziah | 62 |
| Octavian | 57 |
| Orrin | 57 |
| Olivier | 57 |
| Orin | 56 |
| Omarion | 53 |
| Oshea | 52 |
| Ousmane | 46 |
| Oswaldo | 44 |
| Olsen | 43 |
| Omri | 43 |
| Osiah | 41 |
| Owais | 40 |
| Oz | 40 |
| Opie | 39 |
| Olen | 39 |
| Ostin | 38 |
| Oaklyn | 38 |
| Obi | 37 |
| Ollivander | 37 |
| Othniel | 36 |
| Oriel | 33 |
| Othman | 33 |
| Ovidio | 32 |
| Ojas | 32 |
| Oaklan | 32 |
| Omega | 32 |
| Olan | 30 |
| Onix | 29 |
| Olliver | 29 |
| Oaks | 29 |
| Odyn | 28 |
| Oakes | 28 |
| Olson | 27 |
| Onyxx | 27 |
| Odell | 25 |
| Oumar | 25 |
| Oberon | 25 |
| Oisin | 25 |
| Osias | 25 |
| Ossian | 24 |
| Octavious | 23 |
| Olivander | 23 |
| Owyn | 22 |
| Ovie | 22 |
| October | 21 |
| Odysseus | 21 |
| Oryan | 21 |
| Omir | 21 |
| Obinna | 20 |
| Osmin | 20 |
| Oseias | 20 |
| Oseas | 20 |
| Oshen | 20 |
| Ole | 19 |
| Obsidian | 19 |
| Otoniel | 19 |
| Osama | 18 |