Allister vs Shannon

Baby Name Comparison — 2026

Allister

Boy #2,601 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Scottish Gaelic

Scottish Irish English Celtic

✓ All Clear

Boy #2,609 Most Popular 2 Syllables

"old river, ancient waters"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Allister Rank #2,601

Shannon Rank #2,609

Allister is more popular, ranked #2601 vs #2609 for Shannon.

Is Allister or Shannon more popular?

Allister is more popular, ranked #2601 compared to Shannon at #2609 in the United States.

What do Allister and Shannon mean?

Allister means "defender of men" (Greek via Scottish Gaelic origin). Shannon means "old river, ancient waters" (Irish Gaelic origin).

Are Allister and Shannon boy or girl names?

Allister is primarily a boy name. Shannon is primarily a boy name.