| Name | Origin | Planet | Metall | Zodiac | Lucky number |
| ♂ Onfroi | France | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 41/5 |
| ♂ Onika | Africa | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 23/5 |
| ♂ ONille | France | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 31/4 |
| ♂ Onnan | Germany | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 22/4 |
| ♂ Onofre | Spain | ☉ Sun | Gold | ♌ Leo | 37/1 |
| ♂ Onslow | Arabia | ♂ Mars, ♄ Saturn | Iron, Tin | ♏ Scorpio,♑ Capricorn | 26/8 |
| ♂ Onslowe | England | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 31/4 |
| ♂ Onund | Norway | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 23/5 |
| ♂ Onuris | Egypt | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 33/6 |
| ♂ Ony | Russia | ♂ Mars, ♃ Jupiter | Iron | ♈ Aries,♐ Sagittarius | 18/9 |
| ♂ Onyebuchi | Africa | ♃ Jupiter | Zinc, Tin | ♓ Pisces, ♐ Sagittarius | 48/3 |
| ♂ Ooghavanth | India | ♃ Jupiter | Zinc, Tin | ♓ Pisces, ♐ Sagittarius | 48/3 |
| ♂ Ooschie | Germany | ☾ Moon | Silver | ♎ Libra | 38/2 |
| ♂ Opara | Africa | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 24/6 |
| ♂ Ophion | Greece | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 41/5 |
| ♂♀ Ophir | Israel | ♃ Jupiter | Zinc, Tin | ♓ Pisces, ♐ Sagittarius | 39/3 |
| ♂♀ Oracle | Greece | ♂ Mars, ♃ Jupiter | Iron | ♈ Aries,♐ Sagittarius | 27/9 |
| ♂ Orahamm | England | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 33/6 |
| ♂ Oral | Latin-America | ☉ Sun | Gold | ♌ Leo | 19/1 |
| ♂ Oram | England | ☾ Moon | Silver | ♎ Libra | 20/2 |
| ♂ Oran | Celtic | ♃ Jupiter | Zinc, Tin | ♓ Pisces, ♐ Sagittarius | 21/3 |
| ♂ Oratun | England | ♂ Mars, ♄ Saturn | Iron, Tin | ♏ Scorpio,♑ Capricorn | 26/8 |
| ♂ Orban | Latin-America | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 23/5 |
| ♂ Orbart | Germany | ☾ Moon | Silver | ♎ Libra | 29/2 |
| ♂ Orbert | Germany | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 33/6 |
| ♂ Orcus | Latin-America | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 22/4 |
| ♂ Ord | England | ☉ Sun | Gold | ♌ Leo | 19/1 |
| ♂♀ Orde | Latin-America | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 24/6 |
| ♂♀ Ordell | Latin-America | ♃ Jupiter | Zinc, Tin | ♓ Pisces, ♐ Sagittarius | 30/3 |
| ♂ Ordland | England | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 32/5 |
| ♂ Ordman | England | ☾ Moon | Silver | ♎ Libra | 29/2 |
| ♂ Ordmund | England | ♂ Mars, ♄ Saturn | Iron, Tin | ♏ Scorpio,♑ Capricorn | 35/8 |
| ♂ Ordsone | England | ♂ Mars, ♃ Jupiter | Iron | ♈ Aries,♐ Sagittarius | 36/9 |
| ♂ Ordwald | England | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 32/5 |
| ♂ Ordway | England | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 32/5 |
| ♂ Ordwin | England | ☾ Moon | Silver | ♎ Libra | 38/2 |
| ♂ Ordwine | England | ☾ Moon, ♆ Neptune | Zinc, Tin | ♓ Pisces,♍ Virgo | 43/7 |
| ♂ Oreb | Israel | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 22/4 |
| ♂ Oreias | Greece | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 31/4 |
| ♂ Orel | Russia | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 23/5 |
| ♂ Orell | England | ♂ Mars, ♄ Saturn | Iron, Tin | ♏ Scorpio,♑ Capricorn | 26/8 |
| ♂ Oren | Gaelic | ☾ Moon, ♆ Neptune | Zinc, Tin | ♓ Pisces,♍ Virgo | 25/7 |
| ♂ Oreste | Greece | ☉ Sun | Gold | ♌ Leo | 28/1 |
| ♂ Orestes | Greece | ☾ Moon | Silver | ♎ Libra | 29/2 |
| ♂ Orford | England | ♄ Saturn, ☿ Mercury | Tin | ♍ Virgo | 40/4 |
| ♂ Orham | England | ☉ Sun | Gold | ♌ Leo | 28/1 |
| ♂ Ori | Hebrew | ♀ Venus | Copper | ♎ Libra,♉ Taurus | 24/6 |
| ♂ Orick | England | ☾ Moon | Silver | ♎ Libra | 29/2 |
| ♂♀ Oriel | France | ☿ Mercury, ♅ Uranus | Mercury | ♊ Twins,♒ Aquarius | 32/5 |
| ♂♀ Orien | Latin-America | ☾ Moon, ♆ Neptune | Zinc, Tin | ♓ Pisces,♍ Virgo | 34/7 |