Discover the rich and enchanting world of Celtic names beginning with the letter “O.” In this article, we delve into the history, meanings, and cultural significance of these names, offering a glimpse into the timeless tradition of Celtic nomenclature.
| # | Name | Meaning | Association |
|---|---|---|---|
| 1. | Oisin | Little deer | Legendary Irish poet and warrior |
| 2. | Ogma | Sun-faced | God of eloquence and learning |
| 3. | Olwen | White footprint | Heroine in Welsh mythology |
| 4. | Oengus | True vigor | God of love, youth, and poetic inspiration |
| 5. | Owain | Young warrior | Hero in Arthurian legend |
| 6. | Orla | Golden princess | Figure in Irish mythology |
| 7. | Ogham | Ancient script | Alphabet system in early Ireland and Britain |
| 8. | Orna | Pale, sallow | Figure in Irish mythology |
| 9. | Orlaith | Golden ruler | Name in Irish mythology |
| 10. | Oisín | Little deer | Alternate spelling of Oisin |
| 11. | Onn | Ash tree | Symbol in Celtic mythology |
| 12. | Orla | Golden | Name in Irish mythology |
| 13. | Owein | Well-born, noble | Welsh form of Owain |
| 14. | Odhrán | Little pale green one | Name in Irish mythology |
| 15. | Odras | Unknown | Figure in Irish mythology |
| 16. | Oisín na nÓg | Oisin of the Youth | Epithet of Oisin in Irish mythology |
| 17. | Ollamh Fodhla | Great prophet | Mythical Irish king |
| 18. | Oonagh | Lamb | Queen of the fairies in Irish folklore |
| 19. | Orlanth | Unknown | Deity in Celtic mythology |
| 20. | Ormond | Bear mountain | Name in Irish mythology |
| 21. | Ossian | Little deer | Alternate spelling of Oisin |
| 22. | Owynn | Young warrior | Alternate form of Owain |
| 23. | Oifa | Unknown | Figure in Irish mythology |
| 24. | Olwyn | White footprint | Alternate spelling of Olwen |
| 25. | Orlanthi | People of Orlanth | Followers of the deity Orlanth |
| 26. | Osmail | Divine smile | Name in Irish mythology |
| 27. | Ossianic | Related to Ossian | Pertaining to Ossian |
| 28. | Othar | Otter | Figure in Irish mythology |
| 29. | Othila | Inherited estate | Symbol in Norse mythology |
| 30. | Ovate | Druid seer | Title in Celtic druidry |
| 31. | Owain Glyndŵr | Owain of the valley of Dee | Hero in Welsh history |
| 32. | Owein ap Urien | Owain son of Urien | Figure in Arthurian legend |
| 33. | Owena | Well-born, noble | Feminine form of Owain |
| 34. | Owyn | Young warrior | Alternate form of Owain |
| 35. | Oidheadh Clainne Lir | Tragic death of Lir’s children | Irish mythological tale |
| 36. | Oisin in Tir na nOg | Oisin in the Land of Youth | Legend in Irish mythology |
| 37. | Olc Acha | Bad field | Name in Irish mythology |
| 38. | Olc Aeda | Evil fire | Figure in Irish mythology |
| 39. | Olwen of the White Track | White track | Epithet of Olwen |
| 40. | Oma | Great, grand | Name in Irish mythology |
| 41. | Onna | Ash tree | Symbol in Celtic mythology |
| 42. | Onogor | Unknown | Figure in Celtic mythology |
| 43. | Onuava | Unknown | Deity in Celtic mythology |
| 44. | Oran | Pale, green | Name in Irish mythology |
| 45. | Orbsen | Great spring | Figure in Irish mythology |
| 46. | Orcan | Little pig | Figure in Irish mythology |
| 47. | Ordovices | Those who hammer with hammers | Ancient Celtic tribe |
| 48. | Orev | Golden | Name in Irish mythology |
| 49. | Orlaith of Connacht | Golden ruler of Connacht | Figure in Irish mythology |
| 50. | Ornat | Pale, sallow | Alternate form of Orna |