Ajax vs Gaius

Baby Name Comparison — 2026

Ajax

Boy #3,759 Most Popular 2 Syllables

Meaning

"of the earth"

Origin: Ancient Greek

Cultural Roots

Greek American English

Quick Stats

Popularity Rank
#3,759
Total SSA Count
30
Syllables
2
Formality
Moderate
Nicknames
Jax

Playground Safety Score

✓ All Clear
Full profile for Ajax →

Gaius

Boy #3,655 Most Popular 2 Syllables

Meaning

"to rejoice, happy, glad"

Origin: Latin

Cultural Roots

Roman Latin English American

Quick Stats

Popularity Rank
#3,655
Total SSA Count
31
Syllables
2
Formality
Formal
Nicknames
Gai, Guy

Playground Safety Score

✓ All Clear
Full profile for Gaius →

Popularity Comparison

Ajax Rank #3,759
Gaius Rank #3,655

Gaius is more popular, ranked #3655 vs #3759 for Ajax.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Ajax ___

  • Ajax Alexander
  • Ajax Orion
  • Ajax Leonidas
  • Ajax Caius
  • Ajax Marcus
  • Ajax William

Gaius ___

  • Gaius Marcus
  • Gaius Julius
  • Gaius Alexander
  • Gaius Felix
  • Gaius James
  • Gaius William

Sibling Name Ideas

Names that pair well as siblings.

If you choose Ajax

Achilles Hector Odysseus Cassandra Penelope

If you choose Gaius

Julius Octavia Livia Marcus Caspian

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 Ajax or Gaius more popular?

Gaius is more popular, ranked #3655 compared to Ajax at #3759 in the United States.

What do Ajax and Gaius mean?

Ajax means "of the earth" (Ancient Greek origin). Gaius means "to rejoice, happy, glad" (Latin origin).

Are Ajax and Gaius boy or girl names?

Ajax is primarily a boy name. Gaius is primarily a boy name.

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← Full profile: Ajax ← Full profile: Gaius Browse all baby names