Bo vs Sullivan

Baby Name Comparison — 2026

Bo

Boy #452 Most Popular 1 Syllable

"to live, to dwell"

Origin: Old Norse

Scandinavian American Chinese

24 High Risk

{:type=>:nickname, :severity=>:medium, :message=>"'Bo' can be twisted to 'bo'"}

Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Bo Rank #452

Sullivan Rank #340

Sullivan is more popular, ranked #340 vs #452 for Bo.

Is Bo or Sullivan more popular?

Sullivan is more popular, ranked #340 compared to Bo at #452 in the United States.

What do Bo and Sullivan mean?

Bo means "to live, to dwell" (Old Norse origin). Sullivan means "descendant of the dark one" (Irish Gaelic origin).

Are Bo and Sullivan boy or girl names?

Bo is primarily a boy name. Sullivan is primarily a boy name.