Killien vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Killien Rank #43,949
Theodore Rank #4

Theodore is more popular, ranked #4 vs #43949 for Killien.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Killien ___

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 Killien

No sibling data available yet.

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Killien or Theodore more popular?

Theodore is more popular, ranked #4 compared to Killien at #43949 in the United States.

What do Killien and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Killien and Theodore boy or girl names?

Killien is primarily a boy name. Theodore is primarily a boy name.

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