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

Although this Italian name is identical to the word for "lily", it is actually a cognate of Giles (English) or Gilles (French), meaning "young goat".

Giglio

The most popular name for Korean boys in 1960.

Sung-ho

Seong-ho

Derived from Germanic kuni "clan, family", but also a short form of Konrad, meaning "brave counsel". Konrad I, Duke of Swabia is also known as Kuno of Öhningen.

Kuno

Derived from the Latin lilium, Lírio is a unisex floral name which was used for a witch character in the cult 1996 horror film The Craft.

Lirio

Dirigo

Bajo

Cuno

Popular name for dogs in the Middle Ages, likely those with large mouths.

Magastomo

Adebayo

A joyful Yoruba name which would be perfect for a long-awaited baby.

Dayo

Ejiro

Itoro

Jengo is pronounced like Django, best known to Americans as the first name of the hero of Quentin Tarantino's film Django Unchained. 

Jengo

Mayeso

Okoro

Oyibo

Thabo

Among the Ewe people of Ghana and Togo, Yao is the name for babies born on Thursday.

A Shakespearean name used for the wild and witty best friend of Romeo in Romeo and Juliet. A variant of the name, which supposedly derives from Mercurius/Mercury, first appeared in one of Shakespeare's sources, Luigi Da Porto's 1530 play Giulietta e Romeo.

Mercutio

Boy names ending in O offer many intriguing options, from such top names as Theo to unique O-ending names from Kylo to Zino.

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.

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, ordered by their current popularity on Nameberry.

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 64)

1770+ Boy Names Ending in O