Cassio vs Eileen

Baby Name Comparison — 2026

Cassio

Boy #11,796 Most Popular

✓ All Clear

Girl #592 Most Popular 2 Syllables

"bright, shining one"

Origin: Greek via Irish (Eibhlín)

Irish Scottish English American

15 High Risk

{:type=>:rhyme, :severity=>:medium, :message=>"'Eileen' rhymes with 'mean'"}

Cassio Rank #11,796

Eileen Rank #592

Eileen is more popular, ranked #592 vs #11796 for Cassio.

Is Cassio or Eileen more popular?

Eileen is more popular, ranked #592 compared to Cassio at #11796 in the United States.

What do Cassio and Eileen mean?

Eileen means "bright, shining one" (Greek via Irish (Eibhlín) origin).

Are Cassio and Eileen boy or girl names?

Cassio is primarily a boy name. Eileen is primarily a girl name.