| Name | Meaning | Gender | Origin |
|---|
| Nibbles | | Unisex | |
| Nikita | unconquered | Male | Russian |
| Nitro | Short for Nitroglycerin a highly explosive liquid. | Male | |
| Noonoo | | 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 |
| 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 |
| Oskar | English, God's spear, Irish, deer-lover or champion warrior | Male | |
| Otis | Wealthy.
| Male | |
| Ozzy | From Osbert - Divinely bright warrior. | Male | |
| Pablo | Little. Form of Paul.
| Male | Spanish |
| Pako | | Unisex | Hebrew |
| Pea | | Unisex | Hebrew |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | |
| Peanutbutter | | Unisex | Hebrew |
| Peewee | | Unisex | |
| Pookah | | Unisex | Hebrew |
| Pumpkin | Large round fruit with orange skin | Male | |
| Quincy | Fifth: derived from Roman clan name.
| Male | |
| Rain | | Male | |
| Rogan | redhead | Male | Irish |
| Rowdy | A rough disorderly person. | Male | American |
| Salem | Peace
| Male | Hebrew |
| Sammy | Hebrew, told by God | Male | English |