1770+ Boy Names Ending in O

About 100 baby boys were named Lucio in the US last year, a number we expect to increase with the growing popularity of all names in the Lu family. It's a family united by sound, with three main branches.

Zero has been documented as a given name before, but it's largely familiar as a stage name (such as Zero Mostel, born Samuel Joel Mostel) and comic book and anime characters.

Was there ever a name that rolled more appealingly off the tongue? Vittorio calls to mind the glory days of Italian cinema, featuring names like Vittorio de Sica and Vittorio Gassman. 

Django — the D is silent as most everyone now knows — the nickname of the great Belgian-born jazz guitarist Django (originally Jean Baptiste) Reinhardt, makes a dynamic musical choice for any jazz aficionado. Reinhardt's nickname "Django" is Romani for "I awake." The name has become more familiar with the release of and acclaim for the Quentin Tarantino film Django Unchained.

Several spelling variations of this name feel stylish for either a boy or girl, including Marlo, Marlow, and Marlowe. This spelling in particular feels in line with trending Arlo.

Traditionally given to the ninth-born son, which is a rarity nowadays.

Better than Lenny, not as good as Leo, and tightly tied to Tonight Show host Jay Leno.

Solo is a singular word name with special meaning for Star Wars fans. Equally appropriate for girls and boys, it works especially well in the middle.

Quirky Italian baby name that works for any gender.

Nicolo is a more lively variation of Nicholas and one of the most attractive Italian names for boys. A name with a long, distinguished Italian history of its own, it also boasts the charming nickname Nico.

Rhythmic route to the nickname Cal. This musical moniker is another great example of a traditionally feminine name that could easily go masculine.

With the ubiquitous Max heard at every playground across the US, international versions have been gaining traction in an attempt to provide a fresh avenue to the highly sought nickname. This Spanish iteration has been in the US Top 1000 since the early 2000s and is currently trending upwards.

More often spelled Romolo,a name sometimes heard in the Hispanic and Italian communities; this version was used by singer Monica.

A river (in Italy), a writer (Bronson), a Teletubby: the Bo of the new millennium.

Popular President Franklin Delano Roosevelt inspired a brief fashion for this as a first name in the 1940s; almost never heard today.

A place name from Venezuela believed to come from an indigenous word for wind, this can make an innovative choice for a child of either sex.

This Dutch form of the ancient Greek saints' name Tycho is in the Top 100 in The Netherlands. While largely unknown in the English-speaking world, it's got a cool sound and ancient roots, which equals a winning choice.

Short form of Adebayo

Zio is a pet form for names ending with 'zio', such as Maurizio, Marzio and Tiburzio. As a full name in Italian, though it wouldl be like naming your son Uncle Uncle.

Aro is a cute name from Scandinavia which, given the popularity of similar names like Milo, Arlo etc might be ripe for more usage outside of the Nordic countries.