List of baby names.
Advanced search| Name | Gender | Origin/Nationality | Name Meaning |
| Oakes | Boy | English | Oak tree |
| Oakley | Boy | English | Oak tree |
| Obaid | Boy | Muslim, Arabic | Small Slave |
| Oceana | Girl | English | Ocean |
| Ogden | Boy | English | Oak tree valley |
| Okely | Boy | English | Oak tree meadow |
| Olin | Boy | English | Holly |
| Oliver | Boy | English | Army of the elf |
| Olivia | Girl | English | Army of the elf |
| Omar | Boy | Muslim, Arabic | Long-Lived |
| Omera | Girl | Muslim, Arabic | Great personality |
| Ordway | Boy | English | Spear warrior |
| Orford | Boy | English | From the ford |
| Oriana | Girl | Latin, Italian | To rise, gold |
| Orla | Girl | Latin | Woman of gold |
| Orlan | Boy | English | Spear, pointed land |