Starting with letter O
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 81 | Omran | Muslim | Solid structure.. | M | |
| 82 | Omri | Biblical | Sheaf of corn. | M | |
| 83 | On | Biblical | Pain, force, iniquity | M | |
| 84 | Ondyaw | Welsh | Legendary son of a French Duke. | M | |
| 85 | Onesimus | Biblical | Profitable, useful. | M | |
| 86 | Onfroi | French | PeacefuI Hun. | M | |
| 87 | Onslow | English | From the zealous one's hill. | M | |
| 88 | Onund | Norse | Son of Viking. | M | |
| 89 | Onuris | Egyptian | Brings back the distant one. | M | |
| 90 | Ophion | Greek | A serpent. | M | |
| 91 | Ophir | Biblical | Fruitful region. | M | |
| 92 | Ophrah | Biblical | Dust, lead, a fawn. | M | |
| 93 | Orahamm | English | From tbe riverbank enclosure. | M | |
| 94 | Oratun | English | From the shore farm. | M | |
| 95 | Orban | Latin | Born in the city. | M | |
| 96 | Orcus | Latin | The mythical underworld. | M | |
| 97 | Ordman | English | Spearman. | M | |
| 98 | Ordmund | English | Spear defender. | M | |
| 99 | Ordsone | English | Ormond's son. | M | |
| 100 | Ordway | Anglo-Saxon | Warrior armed with a spear. | M | |