Cai vs Justus

Baby Name Comparison — 2026

Popularity Comparison

Cai Rank #1,906
Justus Rank #1,814

Justus is more popular, ranked #1814 vs #1906 for Cai.

Frequently Asked Questions

Is Cai or Justus more popular?

Justus is more popular, ranked #1814 compared to Cai at #1906 in the United States.

What do Cai and Justus mean?

Cai means "rejoice, delight" (Latin via Welsh origin). Justus means "just, righteous, upright" (Latin origin).

Are Cai and Justus boy or girl names?

Cai is primarily a boy name. Justus is primarily a boy name.

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