| Name | Meaning | Gender | Origin |
|---|
| Ogden | from the oak valley | Male | English |
| Onslow | from the zealous one's hill | Male | English |
| Orlando | Famous land
| Male | Italian |
| Oslo | | Male | Hebrew |
| Oxford | From the ox ford
| Male | English |
| Palermo | | Male | Hebrew |
| Paxton | From the peaceful farm
| Male | Latin |
| Pembroke | bluff, headland | Male | English |
| Persia | | Male | Hebrew |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Pima | after the native american indian tribe | Unisex | |
| Prescott | Residence Name | Male | English |
| Presley | priest's meadow | Unisex | |
| Preston | dweller at the church, priest's settlement | Male | English |
| Quimby | from the woman's estate | Male | Norse |
| Quincey | | Unisex | |
| Radburn | reedy stream | Male | English |
| Raleigh | dweller by the deer meadow | Male | English |
| Ramsay | low-lying land | Male | English |
| Reno | Reborn | Male | English |
| Ridgeway | aka - Reggie, Wiggly, Whichway or Fattyboy | Unisex | |
| Rio | River
| Male | Spanish |
| Ripley | after the novel and the movie The Talented Mr. Ripley | Male | English |
| River | | Male | |