Kaio vs Koji

Baby Name Comparison — 2026

Kaio

Boy #4,096 Most Popular 2 Syllables

"rejoice, be happy"

Origin: Latin

Brazilian Portuguese Japanese American

✓ All Clear

Boy #4,251 Most Popular 2 Syllables

"luminous second son"

Origin: Japanese ko (light) and ji (second son)

Japanese

✓ All Clear

Kaio Rank #4,096

Koji Rank #4,251

Kaio is more popular, ranked #4096 vs #4251 for Koji.

Is Kaio or Koji more popular?

Kaio is more popular, ranked #4096 compared to Koji at #4251 in the United States.

What do Kaio and Koji mean?

Kaio means "rejoice, be happy" (Latin origin). Koji means "luminous second son" (Japanese ko (light) and ji (second son) origin).

Are Kaio and Koji boy or girl names?

Kaio is primarily a boy name. Koji is primarily a boy name.