| Name | Meaning | Gender | Origin |
|---|
| Norman | man from the north | Male | English |
| Odin | Viking mythology: the allmighty god | Male | Old |
| Odysseus | full of wrath | Male | Greek |
| Olaf | ancestor's relic | Male | Norse |
| Omar | first son, disciple; gifted speaker; famous | Male | Arabic |
| Osiris | with strong eyesight | Male | Egyptian |
| Oswald | Divinely powerful
| Male | English |
| Otto | Born eighth or wealthy
| Male | |
| Owen | Young fighter
| Male | Welsh |
| Oz | strength | Male | Hebrew |
| Ozzi | | Unisex | |
| Ozzie | Strong
| Male | Short |
| Ozzy | From Osbert - Divinely bright warrior. | Male | |
| Parker | cultivated land | Male | English |
| Patrick | Patrician: noble. Romans society was divided into plebeians: (commoners) and patricians: (aristocrats). Saint Patrick - patron saint of Ireland.
| Male | Latin |
| Paul | small | Male | Latin |
| Pax | peaceful | Male | Latin |
| Paxton | From the peaceful farm
| Male | Latin |
| Pegasus | | Male | |
| Peter | A rock. Peter the biblical fisherman and apostle had impulsive nature and rocklike faith. In Catholic tradition he is the first pope.
| Male | Greek |
| Phillip | lover of horses | Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Pierce | rock | Male | English |
| Pierce | rock | Unisex | |