Theta
Girl nameTheta has been given to 402 babies in the U.S. since 1907. It peaked in 1907.
Popularity over time births per year, 1880–2025
Total babies
402
Peak year
1907 (20 babies)
Rank in 2025
Below top 1000
First recorded
1907
10-year trend
▼ -100%
Gender split
All girls
Spellings & variants
Names one letter away from Theta — alternate spellings parents actually use.
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Theta.
Sibling name ideas for Theta
Same era and popularity as Theta, avoiding matching initials or rhymes.
FAQ
How popular is the name Theta?
Theta has been given to 402 babies in the U.S. since 1907. It ranked below the top 1000 in 2025.
When did the name Theta peak?
Theta peaked in 1907, when 20 babies were given the name.
Is Theta a girl or boy name?
Theta is primarily a girl name (100% of babies named Theta are girls).
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