Choosing the perfect name for your baby boy is one of the most exciting parts of preparing for his arrival. If you’re searching for boy names that start with O, this collection is a great place to begin. Based on data from the U.S. Social Security Administration, these names include some of the most popular and meaningful choices for baby boys.
Whether you’re looking for a timeless classic, a strong traditional name, or a modern favorite, these O boy names offer plenty of inspiration. Many have rich histories and powerful meanings, while others have become popular choices for parents looking for names with a unique and memorable sound. Whether you’re choosing a first name or a meaningful middle name, you’ll find a variety of options to suit every style.
Many famous actors, athletes, musicians, and influential figures also share popular boy names beginning with O, making these names even more inspiring. Here are a few well-known examples:
- Oscar Isaac – Guatemalan-American actor and filmmaker
- Orlando Bloom – British actor known for his roles in major films
- Owen Wilson – American actor, comedian, and writer
- Ozzy Osbourne – English singer and legendary rock musician
Browse the list below to discover the perfect O name for your baby boy. Whether your style is classic, modern, unique, or timeless, you’re sure to find a name that your little one will proudly carry throughout his life.
| Oliver | Owen |
| Oscar | Omar |
| Otto | Orion |
| Onyx | Oakley |
| Odin | Ocean |
| Ozzy | Omari |
| Otis | Orlando |
| Ozias | Osiris |
| Osman | Ollie |
| Oziel | Osiel |
| Oakland | Osvaldo |
| Octavio | Oren |
| Obadiah | Ozzie |
| Orson | Ori |
| Oaklen | Oskar |
| Oslo | Oziah |
| Oaklee | Obed |
| Octavius | Omer |
| Oswald | Olin |
| Om | Oden |
| Orhan | Olsen |
| Orin | Octavian |
| Osmar | Oak |
| Osiah | Omarion |
| Olivier | Orrin |
| Oshea | Oaks |
| Olen | Oswaldo |
| Oakes | Ojas |
| Ousmane | Oz |
| Oaklan | Odysseus |
| Omri | Ovidio |
| Opie | Oseias |
| Omega | Olson |
| Oaklyn | Owais |
| Oumar | Oberon |
| Oriel | Othniel |
| Obi | Oryan |
| Ollivander | Oseas |
| Oswin | Othman |
| Oisin | Osias |
| Orlin | Owyn |
| Obaida | Ostin |
| Odell | Olan |
| Olvin | Omir |
| Oran | Orian |
| Ozan | Oaken |
| Oaklin | Obsidian |
| Odyn | Ole |
| Ozziel | Obie |
| Olyver | Onix |
