Search names

By Clare Green · Jul 2026

Theory

OriginEnglish word name from Greek
Meaning"idea, speculation"
GenderBoy
Also a girl's nameShow me Theory as a girl's name

About Theory

Variation of Thierry

Similar names

These 20 names were selected by our users looking for other names like Theory.

Theory in pop culture

  • Theory is a contemplative and rational type of abstract or generalizing thinking

    or the results of such thinking.

  • "Big Bang Theory

    " TV show

  • Also a name for girls in the vein of Faith

    Hope, and Charity

  • Game Theory and Film Theory

    two popular channels on YouTube run by MatPat

Theory in blog posts

Last Names First: Science hero surnames
The Craziest Baby Names in America

Theory on more lists

6 Letter Boy Names
Names Ending in Y for Boys
Two Syllable Names for Boys
Names That Mean Name
Names that end in y

Advanced Search

Gender
Popularity

Save Theory

Save to list

Save Theory

Save to list

The Nameberry App is live

Find your perfect baby name together in our app, now available on the App Store and Google Play.

  • Swipe through thousands of names with your partner
  • Names you match on are saved to your shared list
  • Recommendations that learn from you and your partner's picks
  • Invite friends and family to find names you all love
  • Backed by Nameberry's 20 years of name-preference data
Download on the App StoreGet it on Google Play