| Nymph | A mythological nature spirit. |
| Nynyue | A name meaning bright and clear. |
| Nyria | Gorgeous, Passionate, Charming |
| Nyrie | A name meaning sea or ocean water. |
| Nyshitha | A name meaning sharp or brilliant. |
| Nytika | As Precious as a Gem, Regular |
| Nyusha | A name meaning precious and dear. |
| Nyushi | A name meaning a sweet melody. |
| Nzinga | A name meaning to twist or turn. |
| Nzingha | A name meaning queen or leader. |
| Oadirah | A Powerful Woman |
| Oafiqa | A name meaning wise and learned. |
| Oalisa | A noble and kindhearted person. |
| Oayth | One who keeps a sacred promise. |
| Obaida | A faithful servant of the Lord. |
| Obdulia | Servant of Allah |
| Obdyne | A strong and resilient spirit. |
| Oberto | Noble and Bright |
| Obinta | A child born during the night. |
| Obulamma | A gift from the divine source. |
| Occa | One who brings peace and order. |
| Oceania | Loves the Ocean |
| Ocilia | A person with keen, sharp vision. |
| Ockvilly | A dweller of the rocky meadow. |
| Odierna | One who lives for the day ahead. |
| Odierne | A name meaning wealthy or rich. |
| Odine | Derived from the word for valley. |
| Odolina | A name meaning wealthy protector. |
| Offede | A name meaning peace or harmony. |
| Ofilia | A name meaning helpful or useful. |
| Ofri | A name meaning my fruit or yield. |
| Ohda | Responsibility, Trusteeship |
| Ohi | A name meaning to be very joyful. |
| Ohileshwari | A name meaning goddess of joy. |
| Ohto | A name meaning a bear or strength. |
| Oiddii | A name meaning a small treasure. |
| Oilie | A variant of Olive, meaning peace. |
| Oisha | Derived from Sanskrit, meaning life. |
| Oishiki | A unique name meaning divine light. |
| Oishini | Goddess Lakshmi |