Tadeo
How to say it: tah-DAY-oh · /tɑˈdeɪoʊ/
Spanish form of Thaddaeus; from Aramaic meaning 'heart' or possibly 'courageous heart'.
Tadeo was the 423rd most popular boys’ name in the United States in 2025, given to 753 babies (Social Security Administration). The 2020s are its busiest decade so far, its births are up 3.9-fold in ten years, and it is projected to rise to #235 by 2030.
Updated · SSA 2025 data, published May 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #423 |
|---|---|
| Babies born in 2025 | 753 |
| Share of births | 1 in 4,402 |
| Peak decade | 2020s |
| Change over 10 years | ×3.9 |
| Projected rank for 2030 (estimate) | #235 |
Sources: Social Security Administration (SSA). How we compute these figures.
Its life, decade by decade
Recent decades brought Tadeo into wider use, leading to a high point in the 2020s. Perched at its peak, the name is likely to rise further shortly.
What goes with it
Pronounced tah DAY oh, Tadeo sounds crisp and travels well and carries biblical roots as a saint's name. Diego shares its lively cadence.
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Tadeo is about 1 in 184.
Around the world
This spelling is used in English, French, Spanish.
Famous people named Tadeo
- Tadeo Allende (born 1999)Argentine footballer
From Wikidata and Wikipedia
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