Recent in Baby
When Baby Resists SolidsWhen Baby Resists SolidsBaby Biting TipsBaby Biting Tips5 Tips To Help Prevent Highchair Injuries5 Tips To Help Prevent Highchair InjuriesWhen Baby and Pet MeetWhen Baby and Pet MeetTreatments for ColicTreatments for ColicBaby Milestones – The First YearBaby Milestones – The First YearTips for Relieving Teething PainTips for Relieving Teething PainBenefits of Making Your Own Baby FoodBenefits of Making Your Own Baby Food

Home › Baby Names Directory › Theta

Theta

♀ Girl

How to Pronounce Theta

Pronounced THAY-tuh /ˈθeɪtə/Medium

Meaning: Theta takes its name straight from the Greek letter, the eighth in the alphabet; as a given name it carries the letter's crisp, scholarly association rather than a translated meaning.Low

In 30 seconds: Theta is a rare girls' name drawn from the Greek letter of the same name. Said THAY-tuh, it appeared for a few United States girls in the early nineteen-hundreds as an unusual word name.
💕 Browse more names
Origin LowGreek, American
MeaningTheta takes its name straight from the Greek letter, the eighth in the alphabet; as a given name it carries the letter's crisp, scholarly association rather than a translated meaning.
U.S. rank (2015)#18870 ↘ Falling
2015 U.S. births5 girls (0.00% of U.S. girls)
Peak year1907
Total births (all-time)≈ 402

Popularity in the U.S. · SSA data

peak 190719072015

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Theta reached a small number of girls in the early twentieth century, with a quiet high around 1907. Letter and word names had a modest vogue then, and Theta reads as a family's inventive pick, its meaning tied to the Greek letter rather than any personal name.

It was never common, given to only a couple dozen girls a year at its peak, and stayed a curiosity. A girl named Theta then would be past a hundred today. The name keeps a neat, symbolic charm and has not returned in modern use.

Did you know? Beyond the alphabet, theta names a symbol used across mathematics and the sciences for angles and other values, giving this rare name a quietly academic flavor.
Overall data confidence 40%
References - Theta — Word name from the Greek letter theta

Variations

ThetisThedaThetta

Nicknames

TheeEttaTay

Famous Bearers

  • Famous bearers coming soon.

If you like Theta…

Theda— a like early-century Greek-flavored name
Alpha— a fellow Greek-letter word name
Thea— a same-sound short Greek name
Zeta— another Greek-letter girls' name

Explore names like Theta

By themerarevintagegreekword-name

All themes →All meanings →All origins →

Frequently Asked

What does the name Theta mean?

It is a word name from theta, the eighth letter of the Greek alphabet, rather than a name with a translated meaning.

How do you pronounce Theta?

It is said THAY-tuh /ˈθeɪtə/, two syllables with the stress on the first.

Is Theta a boy or girl name?

Theta is recorded as a girl's name.

How popular is Theta?

It has always been very rare, given to only a couple dozen girls a year at a small peak in the first decade of the twentieth century.

💬 Ask Nia