| Name | Meaning | Favorites |
| Oded | Strong | |
| Odil | Rich | |
| Odysseus | Full of wrath | |
| Ojas | Body Strength, Light | |
| Ojayit | Courageous | |
| Oleg | Sacred | |
| Olin | Holly | |
| Oliver | Olive Tree | |
| Ollie | From the name oliver | |
| Om Prakash | Light of the essence of life, The light of creation | |
| Omahara | Welling up of Rapture | |
| Omanand | Joy of om | |
| Omar | Speaker, Ultimate devotee | |
| Omari | Version of omar | |
| Omarjeet | Lord of OM | |
| Omav | Avtar of Om, Incarnation of God | |
| Omeed | Hope | |
| Omeet | My light | |
| Omeir | Long living | |
| Omesa | Lord of OM | |
