| Name | Meaning | Gender | Origin | Rashi |
|---|---|---|---|---|
| Olumide | My God has come | 👦 Boy | Yoruba | — |
| Olusegun | God is victorious | 👦 Boy | Yoruba | — |
| Olushola | God has blessed | 👦 Boy | Yoruba | — |
| Olusola | God has blessed | 🧒 Unisex | Yoruba | — |
| Oluwabunmi | God's gift | 👧 Girl | Yoruba | — |
| Oluwafemi | God loves me | 👦 Boy | Yoruba | — |
| Oluwakemi | God pampers me | 👧 Girl | Yoruba | — |
| Oluwasegun | God has won | 👦 Boy | Yoruba | — |
| Oluwaseun | We thank God | 👦 Boy | Yoruba | — |
| Oluwaseyi | God made this | 🧒 Unisex | Yoruba | — |
| Oluwatobi | God is great | 🧒 Unisex | Yoruba | — |
| Oluwatosin | God is worthy to be worshipped | 🧒 Unisex | Yoruba | — |
| Oluwatoyin | God is worthy of praise | 👧 Girl | Yoruba | — |
| Oluwayemisi | God befits me | 👧 Girl | Yoruba | — |
| Oluwole | God has entered the home | 👦 Boy | Yoruba | — |
| Olwethu | Ours | 🧒 Unisex | Xhosa | — |
| Olya | Holy; Blessed (Olga) | 👧 Girl | Russian | — |
| Olzhas | Trophy; Prize | 👦 Boy | Kazakh | — |
| Om | The sacred syllable | 👦 Boy | Sanskrit | Vrishabh |
| Omaima | Little mother | 👧 Girl | Arabic | — |
| Omaira | Red | 👧 Girl | Spanish | — |
| Omar | Long-lived; Flourishing | 👦 Boy | Arabic | — |
| Omayma | Little mother | 👧 Girl | Arabic | — |
| Ombretta | Shadow | 👧 Girl | Italian | — |
| Omed | Hope | 👦 Boy | Kurdish | — |
| Ömer | Long-lived (Turkish form of Omar) | 👦 Boy | Turkish | — |
| Ömer Faruk | Long-lived; One who distinguishes truth | 👦 Boy | Turkish | — |
| Omesh | Lord of Om | 👦 Boy | Sanskrit | Vrishabh |
| Omid | Hope (امید) | 👦 Boy | Persian | — |
| Omima | Little mother | 👧 Girl | Arabic | — |
| Omkar | The sound of Om | 👦 Boy | Marathi | Vrishabh |
| Omneya | Wish; Desire | 👧 Girl | Arabic | — |
| Omnia | Wish; Desire | 👧 Girl | Arabic | — |
| Omnya | Wish; Desire | 👧 Girl | Arabic | — |
| Omobolanle | Child finds wealth at home | 👧 Girl | Yoruba | — |
| Omolade | Child is a crown | 👧 Girl | Yoruba | — |
| Omolara | Children are family | 👧 Girl | Yoruba | — |
| Omolola | Child is wealth | 👧 Girl | Yoruba | — |
| Omondi | Born early in the morning | 👦 Boy | Luo | — |
| Omoniyi | Child has honour | 👦 Boy | Yoruba | — |
| Omotayo | Child brings joy | 🧒 Unisex | Yoruba | — |
| Omotola | Child is worth wealth | 👧 Girl | Yoruba | — |
| Omowumi | I desire a child | 👧 Girl | Yoruba | — |
| Omowunmi | I desire a child | 👧 Girl | Yoruba | — |
| Omphile | He (God) has given me | 🧒 Unisex | Tswana | — |
| Omprakash | Light of Om | 👦 Boy | Sanskrit | Vrishabh |
| Omran | Prosperity; Building | 👦 Boy | Arabic | — |
| Omri | Sheaf of grain | 👦 Boy | Hebrew | — |
| Ömür | Life; Lifetime | 👦 Boy | Turkish | — |
| Önder | Leader | 👦 Boy | Turkish | — |
| Ondra | Strong; Manly (Ondřej) | 👦 Boy | Czech | — |
| Ondřej | Manly (Andrew) | 👦 Boy | Czech | — |
| Oneida | Long-awaited | 👧 Girl | Spanish | — |
| Öner | Proposes; Leader | 👦 Boy | Turkish | — |
| Onkar | The sacred sound Om | 👦 Boy | Sanskrit | Vrishabh |
| Onke | All; Everyone | 👦 Boy | Xhosa | — |
| Onni | Luck; Happiness | 👦 Boy | Finnish | — |
| Onno | Grace | 👦 Boy | Dutch | — |
| Onofrio | Always happy | 👦 Boy | Italian | — |
| Ons | Intimacy; Companionship | 👧 Girl | Arabic | — |
| Onur | Honour; Pride | 👦 Boy | Turkish | — |
| Onurcan | Honourable soul | 👦 Boy | Turkish | — |
| Onyango | Born late in the morning | 👦 Boy | Luo | — |
| Onyebuchi | Who is God? | 👦 Boy | Igbo | — |
| Onyeka | Who is greater than God? | 👦 Boy | Igbo | — |
| Onyekachi | Who is greater than God? | 👦 Boy | Igbo | — |
| Onyinye | Gift | 👧 Girl | Igbo | — |
| Onyinyechi | God's gift | 👧 Girl | Igbo | — |
| Oona | Lamb; Unity | 👧 Girl | Irish | — |
| Opeyemi | Thanks befits me | 🧒 Unisex | Yoruba | — |
| Ophélie | Help | 👧 Girl | French | — |
| Opoku | Akan clan name | 👦 Boy | Akan | — |
| Or | Light | 🧒 Unisex | Hebrew | — |
| Oralia | Golden | 👧 Girl | Spanish | — |
| Oratile | He (God) has come | 🧒 Unisex | Tswana | — |
| Orazio | Timekeeper | 👦 Boy | Italian | — |
| Orçun | Commander | 👦 Boy | Turkish | — |
| Orel | Light of God | 👦 Boy | Hebrew | — |
| Oren | Pine tree | 👦 Boy | Hebrew | — |
| Oreste | Of the mountain | 👦 Boy | Italian | — |
| Orfa | Fawn (Orpah) | 👧 Girl | Spanish | — |
| Orhan | Great ruler | 👦 Boy | Turkish | — |
| Ori | My light | 👦 Boy | Hebrew | — |
| Oriana | Golden; Dawn | 👧 Girl | Italian | — |
| Oriane | Golden; Dawn | 👧 Girl | French | — |
| Oriano | Golden; Dawn | 👦 Boy | Italian | — |
| Oriel | Light of God | 👦 Boy | Hebrew | — |
| Orietta | Golden | 👧 Girl | Italian | — |
| Oriol | Golden; The oriole bird | 👦 Boy | Catalan | — |
| Orit | Light | 👧 Girl | Hebrew | — |
| Orkhan | Great khan | 👦 Boy | Azerbaijani | — |
| Orkun | Spring water | 👦 Boy | Turkish | — |
| Orla | Golden princess | 👧 Girl | Irish | — |
| Orlando | Famous land | 👦 Boy | Italian | — |
| Orlane | Golden | 👧 Girl | French | — |
| Orly | My light | 👧 Girl | Hebrew | — |
| Orna | Pine tree | 👧 Girl | Hebrew | — |
| Ornella | Flowering ash tree | 👧 Girl | Italian | — |
| Oronzo | Light of God | 👦 Boy | Italian | — |
| Orry | After King Orry of Man | 👦 Boy | Manx | — |
| Orsola | Little bear (Ursula) | 👧 Girl | Italian | — |
| Ortal | Dew of light | 👧 Girl | Hebrew | — |
| Osama | Lion | 👦 Boy | Arabic | — |
| Osamah | Lion | 👦 Boy | Arabic | — |
| Osas | God is great | 👦 Boy | Edo | — |
| Osbaldo | God's power | 👦 Boy | Spanish | — |
| Oscar | Divine spear; Friend of deer | 👦 Boy | International | — |
| Osei | Noble | 👦 Boy | Akan | — |
| Oseni | A favoured one | 👦 Boy | Yoruba | — |
| Osher | Happiness | 👦 Boy | Hebrew | — |
| Osiel | Strength of God | 👦 Boy | Spanish | — |
| Osita | Today | 👦 Boy | Igbo | — |
| Oskar | Divine spear | 👦 Boy | Norse | — |
| Oskari | Spear of God (Oscar) | 👦 Boy | Finnish | — |
| Osman | Baby bustard; After Caliph Uthman | 👦 Boy | Turkish | — |
| Osmar | God's glory | 👦 Boy | Portuguese | — |
| Osnat | Belonging to the goddess (Asenath) | 👧 Girl | Hebrew | — |
| Ossama | Lion | 👦 Boy | Arabic | — |
| Ossi | Spear of God (Oskari) | 👦 Boy | Finnish | — |
| Ostap | Steadfast (Eustathius) | 👦 Boy | Ukrainian | — |