Sullivan vs Bo

Baby Name Comparison — 2026

Sullivan

Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #452 Most Popular 1 Syllable

"to live, to dwell"

Origin: Old Norse

Scandinavian American Chinese

24 High Risk

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Sullivan Rank #340

Bo Rank #452

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

Is Sullivan or Bo more popular?

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

What do Sullivan and Bo mean?

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

Are Sullivan and Bo boy or girl names?

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