Lock vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Lock Rank #34,085
Theodore Rank #4

Theodore is more popular, ranked #4 vs #34085 for Lock.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Lock ___

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 Lock

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 Lock or Theodore more popular?

Theodore is more popular, ranked #4 compared to Lock at #34085 in the United States.

What do Lock and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Lock and Theodore boy or girl names?

Lock is primarily a boy name. Theodore is primarily a boy name.

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