Arlo vs Theo

Baby Name Comparison — 2026

Arlo

Boy #146 Most Popular 2 Syllables

"fortified hill"

Origin: Old English

English American 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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Arlo Rank #146

Theo Rank #80

Theo is more popular, ranked #80 vs #146 for Arlo.

Is Arlo or Theo more popular?

Theo is more popular, ranked #80 compared to Arlo at #146 in the United States.

What do Arlo and Theo mean?

Arlo means "fortified hill" (Old English origin). Theo means "gift of God" (Greek (theodoros) origin).

Are Arlo and Theo boy or girl names?

Arlo is primarily a boy name. Theo is primarily a boy name.