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Boy Names Ending in O

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 our website’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.

Jack

Meaning: God is gracious

Origin:English, diminutive of John
93
Ralph

Meaning: wolf-counsel

Origin:English from German
147
Paul

Meaning: small

Origin:Latin
265
John

Meaning: God is gracious

Origin:Hebrew
299
Ben

Meaning: son of

Origin:Hebrew
653