Female and male first names beginning with the letter “O”..

Rare Greek name derived from the word "to give birth," symbolizing fertility and new beginnings.

Onassis, of Greek origin, means 'gift from the sea', derived from 'Anassa' meaning 'grace' or 'favor'. It gained fame through Aristotle Onassis.

Jonathan is a Hebrew name meaning "gift from God," composed of "Yah" (God) and "natan" (gift).

Native American female given name derived from the Chippewa language, translating to "the sun". It embodies warmth, brightness, and life-giving properties.

Unique African name of Igbo origin, meaning 'person' in Nigeria. It symbolizes embodying positive qualities such as kindness and intelligence.

Captivating name of Spanish origin, translating to 'wave' and inspired by water-related locations.

Rare Italian given name derived from the word "onda," meaning "wave.

French literary-derived name meaning 'little wave' or 'water maiden', popularized by Friedrich de la Motte-Fouqué's novel Undine (1811) and Jacques-Olivier Sachot's play Ondine (1843).

Czech given name derived from "onda," meaning "wave" or "ripple," associated with adaptability and fluidity. It honors Saint Wenceslaus I, the patron saint of Bohemia, known for his kindness and generosity. Traditionally male in Czech culture, Ondra has also been used as a female name, adding to its uniqueness.

Czech name derived from "ondrucha", meaning "little wave". Traditionally given to boys but now used unisex, it gained popularity during the Czech National Revival period and was famously borne by poet Ondřej Sekora. Its three-syllable structure lends it a playful energy, while its Slavic roots give it an exotic flair.

Igbo-origin male name that signifies overcoming obstacles, translating to "the journey has been difficult but the road is clear now".

Original name with unknown origins and meaning, possibly a blend of 'Ondine' and 'Ray'. It has gained popularity in recent years despite its elusive etymology.

Rare, unisex French name derived from Old Germanic elements "Anso" meaning "bear" and "bold," brought to France by Vikings during the Middle Ages. Traditionally used as a boy's name, Ondre has gained popularity among girls in recent times. Its strong meaning of strength and bravery made it popular among nobility and warriors in medieval France. Despite its rich history dating back centuries, Ondre remains an uncommon choice for parents seeking a distinctive moniker today.

Captivating Hebrew name meaning 'light' or 'fire', signifying warmth, brightness, and energy.

Rare French boy's name derived from 'ondoyant', meaning 'wavy'. It was originally given to those with wavy hair or living near bodies of water.

Czech masculine given name of Slavic origin, meaning "the brave" or "the valiant," associated with Saint Ondrej, a revered martyr and bishop in ancient Slavic cultures.

Unique, beautiful name of unclear origin, sometimes linked to Slavic roots but with no definitive meaning or history.

Rare, feminine Greek name meaning 'of the hill' or 'mountain'.

Irish origin name derived from O'Neill, meaning "descendant of the aggressive or defiant one".

Unique Irish boy's name derived from Ó Néill, meaning "descendant of Niall," an ancient Irish king.

Uncommon African American name likely created by combining 'Oneta' and 'Anatha', with no widely agreed-upon meaning or history.

Unique boy's name of Spanish origin, derived from the Latin word 'Unicimus' meaning 'unique'.

Captivating name of Cherokee origin meaning "graceful deer.

Distinctive Latin name derived from 'aureus', meaning 'golden', and symbolizing preciousness and radiance.

Rare female name of Mohawk origin, meaning "she makes tracks in the snow," reflecting resilience and strength.

Rare but significant Native American name derived from the Oneida people, meaning 'people of the upright stone' and symbolizing strength, stability, and wisdom.

Captivating name of Senegalese origin, derived from the Wolof language, meaning "the firstborn daughter of a king" or "the eldest princess," carrying a sense of pride and nobility.

Rare Haitian given name derived from the French Hulin, meaning "Holly", also associated with the Irish surname O'Neill, meaning "descendant of Niall".

Irish Gaelic name derived from the surname Ó Néill, meaning "descendant of Niall," carrying a sense of heritage, pride, and strength, with notable historical figures like Hugh O'Neill, "The Great Earl of Tyrone.

O'Neill is an Irish surname derived from 'Ó Néill', meaning 'descendant of Niall', which translates to 'champion'.

Unique African American name combining biblical "Onesimus" (useful/profitable) with Swahili "Shani" (gift).

Distinctive African name of Igbo origin, meaning "Gift from God".

Choctaw Native American name meaning "honey", phonetically pronounced /oʊˈniːkə/.

Distinctive Japanese name coined by Haruki Murakami, meaning unknown but capturing global attention through its appearance in his novel "Kafka on the Shore.

Rare, distinctive male name of Spanish origin, derived from "único" meaning 'unique', signifying the desire for singularity or exceptionality.

Onelia, of Latin origin, means 'burden' or 'load', though historically it was associated with the Roman goddess of wisdom.

Intriguing Irish boy's name that means 'descendant of the brave'.

Recently popularized boy's name with unknown origin and meaning, likely a modern invention inspired by similar-sounding names like Oliver or Owen.

Uncommon Italian name derived from "onella", meaning "little cloud". It evolved from being a pet form of names like Antonella to becoming a standalone given name.

Uncommon African name of Yoruba origin, meaning 'rich king'.