Koy vs Sully

Baby Name Comparison — 2026

Koy

Boy #3,455 Most Popular 1 Syllable

"victorious people"

Origin: Greek via Dutch

Dutch American Hmong

✓ All Clear

Boy #3,579 Most Popular 2 Syllables

"descendant of the dark-eyed one"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Koy Rank #3,455

Sully Rank #3,579

Koy is more popular, ranked #3455 vs #3579 for Sully.

Is Koy or Sully more popular?

Koy is more popular, ranked #3455 compared to Sully at #3579 in the United States.

What do Koy and Sully mean?

Koy means "victorious people" (Greek via Dutch origin). Sully means "descendant of the dark-eyed one" (Irish Gaelic origin).

Are Koy and Sully boy or girl names?

Koy is primarily a boy name. Sully is primarily a boy name.