Names Ending in O for Boys

Osco

Osualdo

Otávio is a form of Octavius used commonly in Brazil. Its handsome sound and lovely nicknames make it a very appealing choice, just as elegant but less stately than the Latin original.

Otávio

Othenio is most likely an old-timey elaboration on Otto, with a much grander, more fantastical feel than its original form. It is mainly known for Othenio Abel, an influential Austrian paleontologist and evolutionary biologist. 

Othenio

Ozro

Rumaldo

Runako

Rutilio

Ryko

Ryotaro

Sabatino

Sacario

Sacramento

Sadao

Samario

Sambo

Sanantonio

Sandino

Santangelo

Santario

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 142)

1770+ Boy Names Ending in O