Theodore vs Tiernan

Baby Name Comparison — 2026

Popularity Comparison

Theodore Rank #4
Tiernan Rank #4,184

Theodore is more popular, ranked #4 vs #4184 for Tiernan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Theodore ___

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

Tiernan ___

  • Tiernan James
  • Tiernan Patrick
  • Tiernan Conor
  • Tiernan Finn
  • Tiernan Sean
  • Tiernan Declan

Sibling Name Ideas

Names that pair well as siblings.

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

If you choose Tiernan

Declan Niamh Cormac Saoirse Ronan

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 Theodore or Tiernan more popular?

Theodore is more popular, ranked #4 compared to Tiernan at #4184 in the United States.

What do Theodore and Tiernan mean?

Theodore means "divine gift" (Greek origin). Tiernan means "lord, chief, ruler" (Old Irish origin).

Are Theodore and Tiernan boy or girl names?

Theodore is primarily a boy name. Tiernan is primarily a boy name.

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