| Name | Sex | Language | Meaning(s) | Original Spelling | Notes |
|---|
| Obadiah | Male | English 773 names | Meaning(s) of Obadiah: Servant of God 231 names | | Name of a Biblical prophet, synonym of Arabic Abdullah. |
| Obaid | Male | Arabic 10801 names | Meaning(s) of Obaid: Servant of God 231 names | عُبَيْد | Variant of the name Ubaid. |
| Obay | Male | Arabic 10801 names | Meaning(s) of Obay: Father 11 names | أُبَيّ | Variant of the name Ubai. |
| Obayd | Male | Arabic 10801 names | Meaning(s) of Obayd: Servant of God 231 names | عُبَيْد | Variant of the name Ubaid. |
| Obayy | Male | Arabic 10801 names | Meaning(s) of Obayy: Father 11 names | أُبَيّ | Variant of the name Ubai. |
| Octavia | Female | English 773 names | Meaning(s) of Octavia: Eighth 3 names | | From Latin origins. |
| Octavian | Male | English 773 names | Meaning(s) of Octavian: Eighth 3 names | | From Latin. |
| Octavius | Male | English 773 names | Meaning(s) of Octavius: Eight 1 names | | From a Latin family name. |
| Odai | Male | Arabic 10801 names | Meaning(s) of Odai: Warrior 62 names | عُدَيّ | Variant of the name Udai. |
| Odaina | Male | Arabic 10801 names | Meaning(s) of Odaina: Listener 7 names Obedient 25 names | عُدينة | Variant of the name Uzaina. |
| Odaina | Female | Arabic 10801 names | Meaning(s) of Odaina: Eden 8 names Place of Everlasting Bliss 8 names | عُدينة | Variant of the name Udaina. |
| Odainah | Female | Arabic 10801 names | Meaning(s) of Odainah: Eden 8 names Place of Everlasting Bliss 8 names | عُدينة | Variant of the name Udaina. |
| Oday | Male | Arabic 10801 names | Meaning(s) of Oday: Warrior 62 names | عُدَيّ | Variant of the name Udai. |
| Odayna | Male | Arabic 10801 names | Meaning(s) of Odayna: Listener 7 names Obedient 25 names | عُدينة | Variant of the name Uzaina. |
| Odayna | Female | Arabic 10801 names | Meaning(s) of Odayna: Eden 8 names Place of Everlasting Bliss 8 names | عُدينة | Variant of the name Udaina. |
| Odeina | Female | Arabic 10801 names | Meaning(s) of Odeina: Eden 8 names Place of Everlasting Bliss 8 names | عُدينة | Variant of the name Udaina. |
| Odette | Female | French 120 names | Meaning(s) of Odette: Prosperous 78 names | | |
| Odile | Female | French 120 names | Meaning(s) of Odile: Prosperous 78 names | | |
| Ofaira | Female | Arabic 10801 names | Meaning(s) of Ofaira: Gazelle 46 names | عُفَيْرَة | Variant of the name Ufairah. |
| Ofairah | Female | Arabic 10801 names | Meaning(s) of Ofairah: Gazelle 46 names | عُفَيْرَة | Variant of the name Ufairah. |
| Ofayra | Female | Arabic 10801 names | Meaning(s) of Ofayra: Gazelle 46 names | عُفَيْرَة | Variant of the name Ufairah. |
| Ofayrah | Female | Arabic 10801 names | Meaning(s) of Ofayrah: Gazelle 46 names | عُفَيْرَة | Variant of the name Ufairah. |
| Ohda | Female | Arabic 10801 names | Meaning(s) of Ohda: Care 22 names Custody 3 names Guardianship 21 names Responsibility 3 names Trusteeship 3 names | عُهْدَة | |
| Ohdah | Female | Arabic 10801 names | Meaning(s) of Ohdah: Care 22 names Custody 3 names Guardianship 21 names Responsibility 3 names Trusteeship 3 names | عُهْدَة | Variant of the name Ohda. |
| Ohdawi | Male | Arabic 10801 names | Meaning(s) of Ohdawi: Guardian 56 names Protector 69 names | عُهْدَويّ | Variant of the name Uhdawi. |
| Ohood | Female | Arabic 10801 names | Meaning(s) of Ohood: Promises 2 names | عُهُوْد | Variant of the name Ouhood. |
| Ohud | Male | Arabic 10801 names | Historic name with unknown meaning. | أُحُد | Variant of the name Uhud. |
| Okko | Male | Finnish 22 names | Meaning(s) of Okko: Friend of Deer 2 names | | |
| Oktai | Male | Turkish 166 names | Meaning(s) of Oktai: Elite 16 names Famous 27 names | اُكتاي | |
| Olalla | Female | Spanish 108 names | Meaning(s) of Olalla: Eloquence 6 names | | Spanish form of Eulalia. |
| Oleg | Male | Russian 86 names | Meaning(s) of Oleg: Prosperous 78 names Successful 158 names | | |
| Oleksander | Male | Ukrainian 2 names | Meaning(s) of Oleksander: Defender of Humanity 37 names | | Form of Alexander. |
| Olena | Female | Ukrainian 2 names | Meaning(s) of Olena: Shining Light 30 names | | Form of Helen. |
| Olga | Female | Russian 86 names | Meaning(s) of Olga: Prosperous 78 names Successful 158 names | | Feminine form of Oleg. |
| Oliaa | Female | Arabic 10801 names | Meaning(s) of Oliaa: Highest 16 names Sublime 55 names Supreme 11 names | عُليا | Variant of the name Ulya. |
| Olive | Female | English 773 names | Meaning(s) of Olive: Olive 18 names | | |
| Oliver | Male | English 773 names | Meaning(s) of Oliver: Olive Tree 16 names | | |
| Olivia | Female | English 773 names | Meaning(s) of Olivia: Olive 18 names | | |
| Olka | Female | Turkish 166 names | Meaning(s) of Olka: Homeland 4 names | | |
| Olwen | Female | Welsh 50 names | Meaning(s) of Olwen: One Whose Footprint is Blessed 1 names One Whose Footprint is White 1 names | | |
| Olya | Female | Arabic 10801 names | Meaning(s) of Olya: Highest 16 names Sublime 55 names Supreme 11 names | عُليا | Variant of the name Ulya. |
| Olya | Female | Russian 86 names | Meaning(s) of Olya: Prosperous 78 names Successful 158 names | | Pet form of Olga. |
| Olyaa | Female | Arabic 10801 names | Meaning(s) of Olyaa: Highest 16 names Sublime 55 names Supreme 11 names | عُليا | Variant of the name Ulya. |
| Omaijed | Male | Arabic 10801 names | Meaning(s) of Omaijed: Glorious 24 names Majestic 46 names | أُمَيْجِد | Variant of the name Umaijid. |
| Omaijid | Male | Arabic 10801 names | Meaning(s) of Omaijid: Glorious 24 names Noble 277 names Praiseworthy 107 names | أُمَيْجِد | |
| Omaima | Female | Arabic 10801 names | Meaning(s) of Omaima: Mother 6 names | أُمَيْمة | Variant of the name Umaima. |
| Omaimiya | Female | Arabic 10801 names | Meaning(s) of Omaimiya: Affectionate 70 names Kind 165 names Loving 33 names | أُمَيْمِيَّة | Literally "mother-like". |
| Omaira | Female | Arabic 10801 names | Meaning(s) of Omaira: Performer of Umrah 6 names Pilgrim 9 names | عُمَيْرَة | Variant of the name Umaira. |
| Omairah | Female | Arabic 10801 names | Meaning(s) of Omairah: Performer of Umrah 6 names Pilgrim 9 names | عُمَيْرَة | Variant of the name Umaira. |
| Omaizar | Male | Arabic 10801 names | Meaning(s) of Omaizar: Strong 97 names | أُمَيْزار | Variant of the name Umaizar. |
