Baby Boy Names Starting With O

The letter O provides lots of fun options for baby boy names. From classic choices to more unique modern names, here are some top picks for baby names starting with O along with their meanings and origins:

Oliver

Oliver is a classic name that never goes out of style. It comes from the Olivier surname which is of Latin origin meaning "olive tree." Oliver has been a consistently popular name globally for many years and was the number 1 boy name in the UK in 2017 and 2018. With its timeless quality yet modern flair, Oliver is a top choice that works for boys of any generation.

Owen

Owen is a Welsh name meaning "young warrior" or "well born." It has a gentle yet strong quality to it and has many famous bearers throughout history like Owen Wilson and Owen Hart. Owen feels classic but not outdated, ranking among the most popular boy names starting with O. With nicknames like "Owie" and "Ozzie," Owen is a name that has appeal across many cultures.

Oscar

Oscar is of English, Irish, and Scandinavian origins derived from either Gaelic meaning "deer lover" or Old Norse meaning "god spear." Beyond its meanings, Oscar is beloved for its association with fame thanks to the Oscar awards. However, it works wonderfully as a name on its own merit with a fun nickname potential like "Oz." Oscar ranks consistently in the US top 100 and maintains popularity across many English-speaking places.

Odin

Odin is a name of Norse mythology referring to the chief god associated with wisdom, death, divination, and battle. While an unusual choice today, Odin is gaining traction as a strong, unique boy name with history and lore behind it. Odin feels bold and unconventional yet carries layers of richness in its mythology. Potential nicknames include "Ode" or more commonly "Odie."

Orion

In Greek mythology, Orion was a great hunter. The name Orion also refers to the Hunter constellation visible in winter months. With its stellar origins and Greek/Latin roots, Orion feels celestial and larger than life. It gives off an air of wonder, adventure, and potential greatness. At the same time, nicknames like "Ori" keep it approachable. Orion is an interesting choice for parents wanting an mythological name with star power.

Otis

Otis is an English name that can trace back to either the Anglo-Saxon meaning "wealthy" or the Greek origins meaning "having great ears." As an English name, Otis gives off an intelligent yet down-to-earth quality. Nicknames for Otis include "Otis", "Otey", and "Otto". Some famous Otises are Otis Redding and Otis Murdoch. With its classic yet playful associations, Otis remains a charming and distinguished name choice.

Octavius

Octavius is a Latin name meaning "eighth" as it references the eighth son. As the birth name of Augustus Caesar, first emperor of Rome, Octavius exudes authority, history, and power. With nickname potential like "Tavi," "Octo," or even just "Tav," Octavius feels dignified yet has a energetic, youthful side too. It's an intelligent pick that parents drawn to sophisticated, unique names will appreciate.

Orlando

Originating from Italy, Orlando means "famous land" or "famed throughout the land." Orlando may be most famous today thanks to the character in Orlando Furious played by Will Ferrell. However, it has a long history and evokes ideals of chivalry and nobility from the epic poem Orlando Furioso. With nicknames like "Lando" or "Landy," Orlando bridges classic roots with a youthful spirit. It offers an energetic, happy association perfect for an adventurous little boy.

Oren

Oren is a Hebrew name meaning "pine tree" or "light." With its two potential meanings, Oren feels positively optimistic yet grounded. It has a light, airy quality helped by its one-syllable structure. As a modern, unique name, Oren allows parents searching for an O name off the beaten path. At the same time, nicknames like "Ore" or "Ren" keep it conventional enough. Its rarity makes Oren an intriguing choice for parents embracing individuality.

Otis

Otis is an English name that can trace back to either the Anglo-Saxon meaning "wealthy" or the Greek origins meaning "having great ears." As an English name, Otis gives off an intelligent yet down-to-earth quality. Nicknames for Otis include "Otis", "Otey", and "Otto". Some famous Otises are Otis Redding and Otis Murdoch. With its classic yet playful associations, Otis remains a charming and distinguished name choice.

Osmond

Osmond is an English name derived from the Old Norse elements meaning "God" and "protection." While uncommon today, Osmond feels dignified and carries a sense of strength and nobility. It feels serious yet approachable in potential nicknames like "Oz" or "Ozzie." Osmond may appeal most to parents drawn to its Old English heritage and uncommon profile within the typical "O" name range.

Oren

Oren is a Hebrew name meaning "pine tree" or "light." With its two potential meanings, Oren feels positively optimistic yet grounded. It has a light, airy quality helped by its one-syllable structure. As a modern, unique name, Oren allows parents searching for an O name off the beaten path. At the same time, nicknames like "Ore" or "Ren" keep it conventional enough. Its rarity makes Oren an intriguing choice for parents embracing individuality.

Odin

Odin is a name of Norse mythology referring to the chief god associated with wisdom, death, divination, and battle. While an unusual choice today, Odin is gaining traction as a strong, unique boy name with history and lore behind it. Odin feels bold and unconventional yet carries layers of richness in its mythology. Potential nicknames include "Ode" or more commonly "Odie."

Onyx

Onyx is a name coming from the precious stone of the same name. In various cultures and histories, onyx was thought to bring wisdom, purity and enhance self-control. As a name, Onyx feels contemporary yet bold. It stands out against the backdrop of more traditional "O" names without losing charm. Nicknames like "Onni" or "Onnie" soften the edge while "Ox" provides a tough spin too. Onyx is a stylish choice for parents desiring an unexpected gem.

Otis

Otis is an English name that can trace back to either the Anglo-Saxon meaning "wealthy" or the Greek origins meaning "having great ears." As an English name, Otis gives off an intelligent yet down-to-earth quality. Nicknames for Otis include "Otis", "Otey", and "Otto". Some famous Otises are Otis Redding and Otis Murdoch. With its classic yet playful associations, Otis remains a charming and distinguished name choice.

Ozzie

While traditionally considered a nickname for longer names like Osmond or Oscar, Ozzie now stands solidly on its own. With its adorable one-syllable structure and nickname potential like "Oz" or "Ozzer", Ozzie embodies an energetic cuteness perfectly. Famous Australian cricket star Ozzie Smith helped popularize it too. Today Ozzie still has vintage flair blended with modern tastes. It remains a fun outlier among more serious "O" picks.

I hope this large collection of baby boy names starting with O has given you lots of options to consider! The letter O provides classic yet unique choices. Names like Oliver, Owen and Oscar feel timeless but also contemporarily fashionable. And names like Oren, Odin and Orion provide more unusual yet compelling profile.

With so many great meanings and origins represented, I'm sure you'll find the perfect O name to suit your little boy's personality.