Foster vs Caius

Baby Name Comparison — 2026

Foster

Boy #1,077 Most Popular 2 Syllables

"forest keeper, forester"

Origin: Old English

English American

✓ All Clear

Boy #1,063 Most Popular 2 Syllables

"to rejoice, joyful"

Origin: Latin

Roman British European American

✓ All Clear

Foster Rank #1,077

Caius Rank #1,063

Caius is more popular, ranked #1063 vs #1077 for Foster.

Is Foster or Caius more popular?

Caius is more popular, ranked #1063 compared to Foster at #1077 in the United States.

What do Foster and Caius mean?

Foster means "forest keeper, forester" (Old English origin). Caius means "to rejoice, joyful" (Latin origin).

Are Foster and Caius boy or girl names?

Foster is primarily a boy name. Caius is primarily a boy name.