| Baby Name | Meaning | Gender |
|---|
| Oliver | Legend Name | Male |
| Olivia | Olive Tree | Female |
| Olivier | From The Olive Tree | Male |
| Onslow | From The Zealous One's Hill | Male |
| Orlando | Renowned In The Land. Form Of Roland. | Male |
| Oscar | Jumping Fighter | Male |
| Oskar | Jumping Fighter | Male |
| Oswald | Power Of God | Male |
| Otto | Born Eighth | Male |
| Owen | Young Fighter | Male |
| Ozi | Strong | Male |
| Paavo | Finnish Form Of Paul (Little) | Male |
| Pablo | Little. Form Of Paul. | Male |
| Paine | Pagan | Male |
| Pancho | Nickname For Francisco And Frank. | Male |
| Paola | Little | Female |
| Paolo | "Small, A Form Of Paul" | Male |
| Park | Unisexual Name Meaning "Cypress Tree" | Female |
| Parker | Keeper Of The Forest | Male |
| Pascal | Born On Easter | Male |
| Paschal | Born On Passover | Male |
| Pasquale | Born On Easter | Male |
| Patricia | Noble | Female |
| Patrick | Patrician: Noble. Romans Society Was Divided Into Plebeians: (Commoners) And Patricians: (Aristocrats). Saint Patrick - Patron Saint Of Ireland. | Male |
| Paul | Small | Male |