Theo vs William

Baby Name Comparison — 2026

Theo

Boy #80 Most Popular 2 Syllables

"gift of God"

Origin: Greek (theodoros)

English Greek French German American

✓ All Clear

Boy #10 Most Popular 3 Syllables

"resolute protector, strong-willed guardian"

Origin: Germanic

English German French

✓ All Clear

Theo Rank #80

William Rank #10

William is more popular, ranked #10 vs #80 for Theo.

Is Theo or William more popular?

William is more popular, ranked #10 compared to Theo at #80 in the United States.

What do Theo and William mean?

Theo means "gift of God" (Greek (theodoros) origin). William means "resolute protector, strong-willed guardian" (Germanic origin).

Are Theo and William boy or girl names?

Theo is primarily a boy name. William is primarily a boy name.