Killean vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Killean Rank #8,996
Theodore Rank #4

Theodore is more popular, ranked #4 vs #8996 for Killean.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Killean ___

No pairings available yet.

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Killean

No sibling data available yet.

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Killean or Theodore more popular?

Theodore is more popular, ranked #4 compared to Killean at #8996 in the United States.

What do Killean and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Killean and Theodore boy or girl names?

Killean is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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← Full profile: Killean ← Full profile: Theodore Browse all baby names