Starting with letter O
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Olive | Latin | Symbol of peace. | F | |
| 42 | Olivia | English | Olivia is a feminine given name derived from the Latin oliva, meaning “olive tree.” In classical literature, olive branches symbolized peace and victory, connoting hope and renewal. Its use in English was popularized by Shakespeare’s Twelfth Night, and modern culture—through figures like Olivia Newton-John—has cemented its position as a timeless choice. Today, Olivia ranks as the most popular girl’s name in the United States, reflecting its enduring charm and broad appeal. | F | |
| 43 | Ollie | Latin | Diminutive of Olive: Olive: symbol of peace. | F | |
| 44 | Olwen | Celtic | Mythical daughter of Yspaddaden. | F | |
| 45 | Olwen | Welsh | White footprint. In 'Culhwch and Olwen', one of the Welsh stories from the 'Maginogion', the Olwen were white flowers growing in the heroine's footprints. | F | |
| 46 | Olwyn | ArthurianLegend | Daughter of a giant. | F | |
| 47 | Olwyn | Welsh | Variant of Olwen: White footprint. In 'Culhwch and Olwen', one of the Welsh stories from the 'Maginogion', the Olwen were white flowers growing in the heroine's footprints. | F | |
| 48 | Olympe | French | From Olympus. | F | |
| 49 | Olympia | Greek | From the home of the gods (Olympus). | F | |
| 50 | Oma | Hebrew | Cedar tree. | F | |
| 51 | Oma | Latin | Named for Bona Dea. | F | |
| 52 | Omega | Biblical | The last letter of the Greek alphabet, long O. | F | |
| 53 | Ominotago | NativeAmerican | Beautiful voice (Chippewa). | F | |
| 54 | Omphale | Greek | A queen of Lydia. | F | |
| 55 | Ona | Irish | One. Also a variant of Una: Lamb; together. | F | |
| 56 | Ona | Latin | Only child; also can be a variant of Una: One. | F | |
| 57 | Onawa | NativeAmerican | Wide awake. | F | |
| 58 | Onesiphorus | Biblical | Who brings profit. | F | |
| 59 | Oni | Egyptian | Wanted. | F | |
| 60 | Onida | NativeAmerican | The one searched for. | F | |