Kai vs Marcus

Baby Name Comparison — 2026

Marcus

Boy #256 Most Popular 2 Syllables

Meaning

"of Mars, warlike"

Origin: Latin

Cultural Roots

Roman English German Scandinavian African-American

Quick Stats

Popularity Rank
#256
Total SSA Count
1,376
Syllables
2
Formality
Formal
Nicknames
Marc, Mark

Playground Safety Score

✓ All Clear
Full profile for Marcus →

Popularity Comparison

Kai Rank #76
Marcus Rank #256

Kai is more popular, ranked #76 vs #256 for Marcus.

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

Marcus ___

  • Marcus James
  • Marcus Lee
  • Marcus Anthony
  • Marcus David
  • Marcus Thomas
  • Marcus Alexander

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kai

Zara Nova Mila Leo Finn

If you choose Marcus

Julius Claudia Octavia Darius Serena

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 Marcus more popular?

Kai is more popular, ranked #76 compared to Marcus at #256 in the United States.

What do Kai and Marcus mean?

Kai means "sea" (Hawaiian origin). Marcus means "of Mars, warlike" (Latin origin).

Are Kai and Marcus boy or girl names?

Kai is primarily a boy name. Marcus is primarily a boy name.

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