1770+ Boy Names Ending in O

Macario is used in the modern US, the Spanish form of the ancient Greek Makarios or Latinized Macarius, the name of several early saints. Accessible and worldly, Macario can lead to the friendly nickname Mac.

Marino is an Italian first and surname with distinct crossover possibilities, having pleasant seaside undertones, and is far more unusual in the U.S. than sister Marina.

Another appealing member of the Alexandrian clan.

More neo than Neo, this is a name heard in the Power Rangers film title Power Rangers Zeo.

While Jairus is rare, this Spanish variation is heard in the US, having ranked in the Top 1000 for the last three decades. It currently ranks in the latter end of the charts, while similar sounding Kairo, Cairo, and Kyro rank higher.

Swaggering, cutting-edge choice equally appropriate for both genders. It's also very rare, given in the US in 2015 to only seven baby girls....and no recorded baby boys. Do you want to be the first?

Flavio is derived from Flavius, a surname used in Ancient Rome. These family names, or cognomens, were given to distinguish branches of the clan and were chosen based on a characteristic of an important bearer. In this case, the Flavius family patriarch was likely blond-haired.

Less substantial than many other Latin choices.

Ario was derived from the Roman family name Arrius, although it bears closer resemblance to Aria, the Italian name meaning "song."

Mino is traditionally a name for people born along Spain's Minho River or Rio Mino. It may be a surname or a first name.

One of several Latin names starting with E that would work and play well with others in any family.

In its original form, Shiloh is a soft unisex name, with connections to both the Bible and American history. While it is often associated with Angelina Jolie and Brad Pitt's daughter, born in 2006, Shiloh ranks in the US Top 500 for girls and boys.

Aapo has been a common Finnish name for decades and is now declining in popularity.

A nickname-sounding surname associated with Russian sculptor and architect Naum Gabo. When model/actress Milla Jovovich gave her daughter the middle name Gabo, she explained that it was a combination of her parents' names--Galina and Bogie.

Cecilio is derived from Caecilius, an Ancient Roman surname that was likely originally bestowed upon someone who was blind.

Possibly meaning "bold", this West African surname is less commonly found as a first name, too.