| Name | Meaning | Gender | Origin |
|---|
| Osborn | Soldier of God | Male | English |
| Osborne | soldier of God | Unisex | |
| Oscar | God's spear.
| Male | English |
| Owen | Young fighter
| Male | Welsh |
| Page | young attendant | Male | |
| Patton | fighter's town | Male | English |
| Percival | Hero of several Arthurian stories
| Male | |
| Pike | pike, a fish | Male | |
| Pilot | | Male | |
| Porthos | | Male | |
| Ransom | son of the shield; redeemer | Male | English |
| Rebel | One that resists of defies authority | Male | Word |
| Rice | | Unisex | |
| Richard | powerful ruler; brave one | Male | |
| Rider | horseman | Male | English |
| Rocket | To move swiftly and powerfully | Male | Word |
| Rodeo | | Unisex | Hebrew |
| Roger | famous spearman, quiet | Male | |
| Romeo | pilgrim to Rome | Male | Italian |
| Roy | regal one, Red haired | Male | |
| Ryder | cavalryman, messenger | Male | British |
| Saber | | Unisex | |
| Sailor | One who serves in the navy or works on a ship. | Male | Occupational |
| Sam | to hear | Male | English |
| Saxon | people of the dagger | Male | |