| Name | Meaning | Gender | Origin |
|---|
| Nikki | Victorious People | Unisex | English |
| Nugget | as in Chicken | Unisex | |
| 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 |
| Ollie | Latin, olive tree | Male | English |
| 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 | |
| Oscar | God's spear.
| Male | English |
| Otis | Wealthy.
| Male | |
| Otto | Born eighth or wealthy
| Male | |
| Owen | Young fighter
| Male | Welsh |
| Paisano | | Unisex | |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | |
| Pebbles | after the character in 'The Flintstones' cartoons | Male | |
| Pepper | A spice or condiment. | Male | Sanskrit |
| Pepsi | Brand of cola soft drink. | Male | |
| Prince | Principal one: first. The rock musician Prince.
| Male | Latin |
| Rebel | One that resists of defies authority | Male | Word |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Ricky | dominant or peaceful ruler | Male | English |
| Rocco | rest | Male | Italian |
| Rocky | rest | Male | English |
| Romeo | pilgrim to Rome | Male | Italian |
| Roscoe | From the deer forest. | Male | Norse |
| Rudy | From Rudolph - Famous wolf | Male | |
| Rufus | Red haired | Male | Latin |