Alex vs Sullivan

Baby Name Comparison — 2026

Alex

Boy #205 Most Popular 2 Syllables

"defender of men"

Origin: Greek

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Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

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Alex Rank #205

Sullivan Rank #340

Alex is more popular, ranked #205 vs #340 for Sullivan.

Is Alex or Sullivan more popular?

Alex is more popular, ranked #205 compared to Sullivan at #340 in the United States.

What do Alex and Sullivan mean?

Alex means "defender of men" (Greek origin). Sullivan means "descendant of the dark one" (Irish Gaelic origin).

Are Alex and Sullivan boy or girl names?

Alex is primarily a boy name. Sullivan is primarily a boy name.