Kaj
Meaning
"to rejoice"
Origin: Latin (Caius/Gaius)
Cultural Roots
Quick Stats
- Popularity Rank
- #6,083
- Total SSA Count
- 15
- Syllables
- 1
- Formality
- Moderate
Baby Name Comparison — 2026
"to rejoice"
Origin: Latin (Caius/Gaius)
"gift of God"
Origin: Hebrew
Mathius is more popular, ranked #5888 vs #6083 for Kaj.
Historical US popularity rank — lower number means more popular.
Historical trend data not available for this comparison.
Names that pair well as siblings.
Answer 3 quick questions and we'll help you decide.
1. Which style feels more like your family?
Mathius is more popular, ranked #5888 compared to Kaj at #6083 in the United States.
Kaj means "to rejoice" (Latin (Caius/Gaius) origin). Mathius means "gift of God" (Hebrew origin).
Kaj is primarily a boy name. Mathius is primarily a boy name.