Kai vs Luca

Baby Name Comparison — 2026

Kai

Boy #76 Most Popular 1 Syllable

Meaning

"sea"

Origin: Hawaiian

Cultural Roots

Hawaiian Scandinavian Japanese American Chinese

Quick Stats

Popularity Rank
#76
Total SSA Count
4,276
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Kai →

Luca

Boy #23 Most Popular 2 Syllables

Meaning

"man from Lucania"

Origin: Latin

Cultural Roots

Italian American German Brazilian Spanish

Quick Stats

Popularity Rank
#23
Total SSA Count
7,959
Syllables
2
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Luca →

Popularity Comparison

Kai Rank #76
Luca Rank #23

Luca is more popular, ranked #23 vs #76 for Kai.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kai ___

  • Kai James
  • Kai Alexander
  • Kai Michael
  • Kai Robert
  • Kai William
  • Kai Thomas

Luca ___

  • Luca James
  • Luca Thomas
  • Luca Anthony
  • Luca Giovanni
  • Luca Marco
  • Luca Cole

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kai

Zara Nova Mila Leo Finn

If you choose Luca

Mia Gianna Matteo Sofia Nico

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Kai or Luca more popular?

Luca is more popular, ranked #23 compared to Kai at #76 in the United States.

What do Kai and Luca mean?

Kai means "sea" (Hawaiian origin). Luca means "man from Lucania" (Latin origin).

Are Kai and Luca boy or girl names?

Kai is primarily a boy name. Luca is primarily a boy name.

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← Full profile: Kai ← Full profile: Luca Browse all baby names