| Name | Meaning | Gender | Origin |
|---|
| Nick | Variation of Dominic, belonging to the Lord | Male | English |
| Nike | victory | Male | Greek |
| Niles | son of Neil | Male | Scandinavian |
| Nissan | miracle | Male | Hebrew |
| Nitro | Short for Nitroglycerin a highly explosive liquid. | Male | |
| Noah | Comfort
| Male | Hebrew |
| Noble | aristocratic | Male | Latin |
| Norris | Caretaker | Male | |
| Norton | From the north farm
| Male | English |
| Odin | Viking mythology: the allmighty god | Male | Old |
| Oliver | The olive tree. The biblical olive tree symbolizes fruitfulness and beauty and dignity. Extending an olive branch signifies an offer of peace.
| Male | Latin |
| Omega | great | Male | Greek |
| Onyx | A gemstone with bands of different colours. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Oreo | American cookie brand consisting of two chocolate wafers with white cream filling. | Male | |
| Orion | Son of Fire
| Male | Greek |
| Orlando | Famous land
| Male | Italian |
| Oscar | God's spear.
| Male | English |
| Otis | Wealthy.
| Male | |
| Otto | Born eighth or wealthy
| Male | |
| Owen | Young fighter
| Male | Welsh |
| Oxford | From the ox ford
| Male | English |
| Oz | strength | Male | Hebrew |
| Ozzie | Strong
| Male | Short |
| Ozzy | From Osbert - Divinely bright warrior. | Male | |