Sejin vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Sejin Rank #22,979
Theodore Rank #4

Theodore is more popular, ranked #4 vs #22979 for Sejin.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Sejin ___

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 Sejin

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 Sejin or Theodore more popular?

Theodore is more popular, ranked #4 compared to Sejin at #22979 in the United States.

What do Sejin and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Sejin and Theodore boy or girl names?

Sejin is primarily a boy name. Theodore is primarily a boy name.

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