Unique Boy Names that Start With O

Otto

German

"wealthy"

Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers. Like most German names , Otto fell out of favor during and after the two…

Orion

Greek

"boundary, limit"

Orion is a rising star, with both mythical and celestial overtones. The Greek mythological Orion was the legendary hunter who pursued the seven daughters of Atlas, was slain by the goddess Artemis,…

Onyx

Word name

"gem stone; claw, nail"

Unlike Pearl and Ruby and more like Jasper, this gem name works well as a boys name. With its strong final X, it feels similar to Alex, Phoenix, Jax, and Rex, while the shiny black quality of the…

Oakley

English

"oak wood or clearing"

As sturdy as Oak, but with stronger roots as a first name, Oakley ticks lots of boxes for modern trends. With its unisex vibe, its nature-based meaning, its surname-y feel, and its popular -lee…

Odin

Variation of Óðinn, Old Norse

"god of frenzy; poetic fury"

Odin is the name of the supreme Norse god of art, culture, wisdom, and law — who was handsome, charming, and eloquent into the bargain. The name projects a good measure of strength and power and has…

Omari

Swahili, Arabic

"populous, flourishing"

This name, like Omar and Amari, has been in the US Top 1000 for many years. After taking a downturn in 2008, it's now again on the upswing. Actor Omari Hardwick keeps it in the public eye. As a name,…

Ozias

Greek, Hebrew

"my strength is God"

A cool Biblical option that entered the US Top 1000 for the first time ever in 2024, Ozias gets extra points for its user-friendly nicknames Oz and Ozzie or Ozzy. Given to around 280 boys in 2024, it…

Ocean

English, nature name

"ocean"

Nature names like Ocean and River are flowing back into favor, especially with nature lovers and green-oriented parents. In 2024, it was given to 483 boys and 325 girls, making this a unisex favorite…

Orlando

Italian variation of Roland

"famous throughout the land"

Orlando, the ornate Italianate twist on the dated Roland, with a literary heritage stretching back to Shakespeare and before, has appealing book-ended o's, and is open to combination with almost any…

Oziel

Hebrew

"might of God"

An obscure Old Testament name used by parents of 75 boys in 2016, Oziel could be a distinctive route to fashionable nickname Oz.

Osiris

Egyptian

"with strong eyesight"

Osiris is the name of Egyptian mythology god-king who died and was reborn every year. Emerging from centuries of obscurity, Osiris has several ingredients for success in the modern world: Roots in…

Oren

Hebrew

"laurel or pine tree"

Soft and sensitive name often heard in Israel.

Oakland

American nature name or place name

"oak land"

Oakland is a place name associated mainly with the city near San Francisco, pretty obviously meaning "oak land". Theoretically unisex but used mainly for boys, Oakland is one of a trending group of…

Octavio

Spanish variation of Octavius

"eighth"

The most popular of the number names used by Hispanic parents, open to all. Octavia and Octavio are two Spanish baby names that are moving out into the wider world.

Orson

Latin and English

"bear cub"

In the past, Orson has felt like a one-person moniker, tied to film director Orson Welles, who dropped his given name of George in favor of his more distinctive middle. While the Citizen Kane creator…

Ozzie

Diminutive of Osmond, Oswald, or Oscar

"divine; deer"

Ozzy has been on the rise in recent years and currently sits in the Top 1000 in the UK and the US. The Ozzie spelling has yet to catch up, but has nevertheless gained more attention thanks to its…

Obadiah

Hebrew

"servant of God"

For the seriously audacious biblical baby namer who wants to move beyond Elijah and Josiah, this name has considerable old-fangled charm. Obadiah, who gave his name to one of the shortest books in…

Oskar

German variation of Oscar

Oskar is to Oscar as Jakob is to Jacob: more distinctive and continental.

Oziah

Greek

"salvation"

This rare alternative to cool Biblical Ozias or Uzziah is full of energy and comes with cool nickname Oz.

Olin

Swedish, Norwegian, English

"ancestor, to inherit, legacy; from the low-lying land"

Distinctive yet familiar, Olin is both a Scandinavian name and an English surname. Currently a rare choice, yet reminiscent of popular options, like Oliver, Orion, and Colin. Following its…