O- Boys

Oak, a symbol of solidity, strength, and longevity, is joining Cedar and Pine as a viable name, one that would work especially well in the middle.

The Shakespearean character Oberon in A Midsummer Night's Dream is King of the Fairies, but the name, with its strong 'O' beginning, projects a far more virile image than that.

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 excellent assimilation potential.

Rarely used surname, associated with humorous poet Ogden Nash.

Old Testament name of a king of Israel, related to the harvest.

With a cool color meaning and a woodsy, earthy feel, this anglicized spelling of the Irish name Odhrán could rise in popularity thanks to Olympic rugby player, Orrin Bizer. The name did rank in the US Top 1000 in the late 1800s and the early 20th century, but has been out of the charts since the 60s.

Oscar is one of the most stylish Old Man Names of our era. While it's softened slightly in popularity over the past 20 years, that may be considered a very good thing.

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

Otis has real appeal for parents attracted to its catchy O initial and combination of strength and spunk. The appealing hero of the British TV show Sex Education has done much to propel Otis into the forefront of cool names.

Spirited Italian form of Octavius

Otto is cool again. Long a quintessential Old Man Name, Otto has been promoted to trending darling of adventurous baby namers.

Owain is much more unusual than its brother name Owen, and feels a little more rugged, a little more adventurous and ancient.

Owen, a resonant Celtic name, has ranked among the Top 100 boys' names in the US for 20 years and is now at its highest point ever.