Ace vs Theo

Baby Name Comparison — 2026

Ace

Boy #165 Most Popular 1 Syllable

"unity; the best; one"

Origin: Latin via Old French

American English Australian

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Boy #80 Most Popular 2 Syllables

"gift of God"

Origin: Greek (theodoros)

English Greek French German American

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Ace Rank #165

Theo Rank #80

Theo is more popular, ranked #80 vs #165 for Ace.

Is Ace or Theo more popular?

Theo is more popular, ranked #80 compared to Ace at #165 in the United States.

What do Ace and Theo mean?

Ace means "unity; the best; one" (Latin via Old French origin). Theo means "gift of God" (Greek (theodoros) origin).

Are Ace and Theo boy or girl names?

Ace is primarily a boy name. Theo is primarily a boy name.