<a href="https://nameberry.com/list/317/Unique-Baby-Names">Unique baby names</a> ending in O (and the "o" sound) are among the very hottest right now, with the likes of Leo and Theo, Harlow and Margot rocketing up the popularity charts. 

But there are still oodles of obscure O-ending names out there, just waiting to be discovered. We've polled our members to bring you 100+ of Nameberry's very favorite unique O-ending baby names, from Amparo and Benno to Yarrow and Zeno. 

If you want to see even more baby names ending in O, check out our complete lists of <a href="/baby-names/875/girl-names-ending-in-o">Girl Names Ending in O</a> and <a href="https://nameberry.com/baby-names/901/boy-names-ending-in-o">Boy Names Ending in O</a>.

If quirky baby names ending in O are your thing, find our full list of rare, uncommon, and unique names ending in o here.

Unique Baby Names Ending In O

Pippo

Dynamo is a newly-invented word name that's on trend in several different ways. It's got an o ending, an uplifting meaning, and it's gender-neutral. And what kid wouldn't want Dynamo as a middle name?


Dynamo

Rufo

Natalino is the jaunty Italian male nickname for the gender-neutral Natale. And it has that fashionable o ending. Natalino might work as a nickname for Nathaniel too.

Natalino

Unique Baby Names Ending in O

Unique baby names that end in the letter O, with meanings, origins, and popularity, including top O-ending boy names such as Leo and Theo as well as unique, uncommon boy names that end with the letter O. (Page 7)

Unique Baby Names That End in O

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