| Biblical baby names begining from O |
| Obadiah |
 | Servant of the Lord |
| Obal |
| Inconvenience of old age. |
| Obed |
| A servant; workman |
| Obed-edom |
| Servant of Edom |
| Obil |
 | That weeps, who deserves to be bewailed. |
| Oboth |
| 'Dragons, fathers, desires' |
| Ocran |
| A disturber, that disorders. |
| Oded |
| To sustain, hold or lift up. |
| Og |
| A cake, bread baked in ashes. |
| Ohad |
| Praising, confessing. |
| Ohel |
| Tent, tabernacle, brightness. |
| Olympas |
| Heavenly. |
| Omar |
| He that speaks; bitter |
| Omega |
| The last letter of the Greek alphabet, long O. |
| Omri |
| Sheaf of corn. |
| On |
| Pain, force, iniquity |
| Onam |
| Pain, force, iniquity |
| Onan |
| Pain, force, iniquity |
| Onesimus |
| Profitable, useful. |
| Onesiphorus |
| Who brings profit. |
| Ono |
| Grief or strength or iniquity of him. |
| Ophel |
| A tower, darkness, small white cloud. |
| Ophir |
| Fruitful region. |
| Ophni |
| Wearisomeness, folding together. |
| Ophrah |
| Dust, lead, a fawn. |
| Oreb |
| A raven. |
| Ornan |
| That rejoices. |
| Orpah |
 | The neck or skull. |
| Oshea |
| A savior; a deliverer |
| Othni |
| My time, my hour. |
| Othniel |
| The hour of God |
| Ozem |
| That fasts, their eagerness. |
| Ozias |
| Strength from the Lord |
| Ozni |
| An ear, my hearkening. |
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