Boy names ending in O offer many intriguing options.
 
Mateo is the most popular boy name ending with O right now, though there are nearly 100 O-ending boy names among the US Top 1000. Along with Mateo, other boy names in the US Top 1000 include Leo, Santiago, Diego, Romeo, and Antonio.
 
And there are hundreds more unique names for boys that end with the letter O worthy of your consideration. These range from the biblical Jethro to the ancient Greek Cosmo to the cool, modern Rio and Po.
 
Here are all Nameberry’s boy names that end with the letter O. The top names below rank among the current US Top 1000 Baby Names and are ordered by popularity. Unique names rank below the Top 1000 and are listed alphabetically.

Names Ending in O for Boys

Giuseppino

Fernão

Fierce choice from the Oromo culture of Ethiopia.

Lencho

Frank is cool again.  Frankie is cute.  But frankly, Frankito is a couple of diminutives too many.

Frankito

Berno

Galeno

Preemo

Jonaso

A striking, one-of-a-kind name that mimics Leo's best qualities — including the leonine meaning.

Llelo

Edmondo

Marcano

Kazuhito

Cyrillio

Rayno

Unusual and romantic Italian form of Justin. Giusto has historically been more popular in Italy, but both variants are rare now.

Giustino

Javier alejandro

Damian alejandro

Sabio

Appolo

Cisqo

boy names ending in o

Baby boy Names ending in the letter O, with meanings, origins, and popularity, including top boy names that end in O such as Milo and Kylo along with unique O-ending names such as Quinto. (Page 81)

1770+ Boy Names Ending in O

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