Thadeo
Boy nameThadeo has been given to 126 babies in the U.S. since 2014. It peaked in 2025. In 2025, about 1 in 65,695 boys was named Thadeo.
Popularity over time births per year, 1880–2025
Total babies
126
Peak year
2025 (26 babies)
Rank in 2025
Below top 1000
First recorded
2014
10-year trend
▲ +271%
Gender split
All boys
Spellings & variants
Names one letter away from Thadeo — alternate spellings parents actually use.
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Thadeo.
Sibling name ideas for Thadeo
Same era and popularity as Thadeo, avoiding matching initials or rhymes.
FAQ
How popular is the name Thadeo?
Thadeo has been given to 126 babies in the U.S. since 2014. It ranked below the top 1000 in 2025.
When did the name Thadeo peak?
Thadeo peaked in 2025, when 26 babies were given the name.
Is Thadeo a girl or boy name?
Thadeo is primarily a boy name (100% of babies named Thadeo are boys).
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