1770+ Boy Names Ending in O

The association with the infamous Nero, the fiddling Roman emperor, would be unavoidable. But there was also the detective Nero Wolfe, hero of many mystery stories.

Widely heard in both Italian and Spanish households, Sergio and his many international brothers are rooted in Sergius, one of the original Roman family names. The meaning is unknown, but possibly is related to servant or protector.

Quint or Quinton played to a Latin rhythm.

Based on the ancient name Marcellus, drawn from Mars the god of war, Marcello -- it's pronounced mar-chell-o -- is one of the most lush and attractive Latin names.

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.

Calixto is known in Spain as the name of three popes, one of whom was the martyr, Callixtus I, regarded as a saint. Calixto has a lot of energy and futuristic spirit, thanks in part to the attention-grabbing 'x.' He is the main character in the Spanish classic, Fernando de Rojas's Tragicomedy of Calixto and Melibea.

More creative and artsy than Mario. Dario is starting to edge up the US popularity list after languishing near the bottom of the Top 1000 over the last four decades. Is that inspired by Dario's popularity in Italy, Spain, Germany, and Switzerland?

Miro comes from the Slavic root word mir meaning "peace, world". Sometimes Miro is used as a diminutive of longer names like Miroslav or Vladimir, but it can also be given as a name in its own right. Miro has a wonderful meaning and fits right in with trendy names Arlo and Milo, as well as being an artistic honor name for Spanish painter and sculptor Joan Miró.

Leandro is a variation of the Ancient Greek name Leander, created by combining the Latin words leo and Andro together, to get a meaning that suggests strength, power, and bravery. The Hero and Leander myth lends the name a romantic, poetical feel, while it's association to Bishop Leander of Seville gives it a more saintly quality.

Lito is an onomatopoeia of a name: a name that sounds like what it means. A modern bearer is Lito Sheppard, Philadelphia Eagles cornerback. Lito might also be a short form of such names as Carlito and Ippolito.

Lively nickname, but we'd prefer the more substantial Orlando.

Maro is an ancient saints' name -- he was an Italian follower of St. Flavia and was martyred -- rarely used in modern life. The name Maro may stem from the Roman Marcellus, related to Mars, the god of war, or it may be a feminine form of Maria, connected with Mario. Maro is also a Japanese name meaning "myself."

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

Pablo, the commonly used Spanish version of Paul, has the added bonus of some fantastic artistic bearers: painter Picasso, cellist Casals, and poet Neruda. Pablo has been consistently in the US charts since records began, and has been within the Top 500 since the mid 60s. However, Pablo has never cracked the Top 200, making it familiar but not overused or tired.

Massimo is a Latin charmer, much more appealing than the old-fashioned Mario, and is a charismatic member of the Maximus/Magnus family.

This name of an old Hollywood nightclub still retains a spark of glamour.

With Mateo making its first ever appearance in the US Top 10 in 2023, its Scandinavian variant Matheo borrowed some of its spotlight and appeared in the Top 1000 for the first time.

Japanese name common among older generations.

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

A dashing, dramatic and romantic Italian surname, associated with early movie heartthrob Rudolph, and later with Italian fashion designer Valentino (Garavani). Also the name of an early Roman saint, whose feast day marks the beginning of spring. Ricky Martin chose it for one of his twin boys.