Brain vs Millis

Baby Name Comparison — 2026

Popularity Comparison

Brain Rank #18,439
Millis Rank #18,367

Millis is more popular, ranked #18367 vs #18439 for Brain.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Brain ___

  • Brain Lee
  • Brain James
  • Brain Scott
  • Brain Dale
  • Brain Paul
  • Brain Ray

Millis ___

No pairings available yet.

Sibling Name Ideas

Names that pair well as siblings.

If you choose Brain

Rex Beau Chase Finn Hawk

If you choose Millis

No sibling data available yet.

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 Brain or Millis more popular?

Millis is more popular, ranked #18367 compared to Brain at #18439 in the United States.

What do Brain and Millis mean?

Brain means "noble, high" (Celtic origin).

Are Brain and Millis boy or girl names?

Brain is primarily a boy name. Millis is primarily a boy name.

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← Full profile: Brain ← Full profile: Millis Browse all baby names