Begins or Ends with O

Adriano is a dashing Italian name which gets around the possible gender confusion of Adrian.

Energetic but mellow.

Alberto is the Italian, Spanish and Portuguese variation of Albert and lends a more unusual and fashionable edge to this name which is still a grandpa name to many.

Softer and smoother than Alexander, this classic Spanish name for boys has made a seamless transition to this culture. Adding to its current impact: the Lady Gaga song Alejandro .

For anyone seeking a more unusual version of Alexander, this is a real winner.

Alonso is the Spanish and Portuguese diminutive version of Alfonso, itself deriving from an old Germanic name "Adalfuns" meaning "noble and ready." Although the Italian spelling Alonzo is more popular in the US, Alonso has its own strong history.

Alonzo is dashing and debonair, with a large measure of Latin flair.

A well-used Spanish saint's name with a lot of flair that could definitely cross over to more general usage. It reached its peak in the United States in 1985, when it ranked Number 456. In Spain, Alvaro is a Top 20 boys' name.

Antonio is a Shakespearean favorite -- the Bard used it in no less than five of his plays, and has long been a ubiquitous classic in Spanish-speaking countries, where the nickname Tonio is also prevalent. Antonio is also among an elite group of perennially popular names in the US, where it has always been among the boys' Top 1000 since baby name record-keeping started in 1880.

With mythological names rising, the handsome son of Zeus and god of medicine, music, and poetry among many other things might offer an interesting, if high-pressure, option.

Common Roman name mentioned in the Bible that has a crisply attractive sound.

The name of the ship sailed by Jason in his search for the Golden Fleece is now more often used for starch, trucks, and heavy machinery.

Quirky cool Arlo is now well and truly back. Last year it broke into the US Top 200 boy names and consistently ranks among the most popular boy names on Nameberry.

Subtract the last two letters of Arnold, and you're left with a much more modern-sounding name. Arno is also the name of the main river in Florence, upon which sits the famed Ponte Vecchio. The Italian river name means "flowing water".

Words are not always easy to translate into baby names, but the implications of being straight and swift lend this one great potential as a name. It also has the popular o-sound ending, which brings it further into the realm of possibility. Rising rock star Aja Volkman pulled a gender switch when she named her daughter Arrow Eve.

Italian, Portuguese and Spanish variation of Arthur that makes the original feel more romantic and dashing.

With the current craze for ancient Roman names, variations of the Latin Augustus with its majestic meaning are becoming more popular in many cultures. Month name August, also drawn from the original Augustus, is the most popular form in the US, but Augusto may start showing up on international popularity lists.

Aurelio is an energetic Italian name rarely heard here, with an attractive aura. As the female version Aurelia gains greater notice, we expect to hear more from Aurelio too. In fact, Aurelio has recently entered the Top 1000 in the US in 2022. Next to follow might be latinate versions Aurelius and Aurelian.