Obsidian vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Obsidian Rank #5,079
Theodore Rank #4

Theodore is more popular, ranked #4 vs #5079 for Obsidian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Obsidian ___

  • Obsidian James
  • Obsidian Cole
  • Obsidian Stone
  • Obsidian River
  • Obsidian Wolf
  • Obsidian Ash

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 Obsidian

Onyx Jasper Flint Sage Slate

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 Obsidian or Theodore more popular?

Theodore is more popular, ranked #4 compared to Obsidian at #5079 in the United States.

What do Obsidian and Theodore mean?

Obsidian means "volcanic black glass" (Latin origin). Theodore means "divine gift" (Greek origin).

Are Obsidian and Theodore boy or girl names?

Obsidian is primarily a boy name. Theodore is primarily a boy name.

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