1770+ Boy Names Ending in O

Croatian short form of Josip (Joseph) properly spelled Joško. This would make a fun alternative nickname for Joseph or even Joshua outside Croatia, too.

The final o in Patricio adds a bit of punch and pizzazz, though it also spins the name closer to the feminine Patricia.

Spero has a cool sound and a wonderful positive meaning.

Introduced to the lexicon by the husband of Little House on the Prairie writer Laura Ingalls Wilder, most scholars agree that this unusual name comes from the Arabic El-Mansur.

This unusual spelling was used by Johnny Knoxville for his son.

Norman form of the Germanic name Haimo.

When Kim Kardashian and Kanye West named their daughter Chicago — after West's hometown — we expected it to rise for baby girls. But American parents have taken to Chicago as a boy name. It's been given to more boys than girls every year since 2018.

This name of a California desert town, used by Deborah Falconer and Robert Downey, Jr. for their son, makes a much livelier and more individual – not to mention more masculine – improvisation on the themes of India and Indiana.

The meaning makes this name interesting, but the sound is too related to nemesis.

The unique O-ending makes this name memorable, especially for someone with ties to Texas.