Tadei
Almost unknown in Poland until recently: the first boys given it show up in the records in 2020, and the count has climbed most years since. A Hebrew name at root, at home mostly in Ukraine, that opens in Polish to Tadeusz and shortens to Tadek.
Tadei Pronunciation
Tadei is pronounced tah-DE-ee (/taˈdɛi/).
What Tadei means
Where Tadei comes from and what it has meant to the people who carry it.
Tadei traces back to a Hebrew root, the same source that gave the early church its apostle Thaddeus, remembered in the Gospels as one of the twelve. In Ukraine the name settled and grew familiar, worn by boys who might later sign a document as Tadei or answer to the fuller Tadeusz. The short meaning fixed to it, courageous heart, came as a later reading rather than a literal rendering of that ancient root.
The variant Tadeusz opens the name toward Poland, where it stands among the grand old forms. Closer to home the diminutive Tadek does the daily work. Odważny, śmiały, the Polish gloss runs. It reads the name as a claim about temperament.
A boy named Tadei holds a Hebrew beginning and a Ukrainian home in one short word. On an official form at the urząd the name looks plain, a handful of letters and an ending. The courageous heart it names is the sense readers gave it, while the form most friends actually reach for is Tadek.
How many people are named Tadei
1 in 72854 men in Poland is named Tadei. 293 people carry it in the 2025 register: rank #1770 among male names.
Tadei's popularity over time
20 boys were given the name in 2025, ranking #516 among newborns. It has been climbing since 2019.
Where Tadei is most popular
Tadei is most popular in Masovian, 205% above the national average (14 boys born 2019–2025), followed by Greater Poland (+79%) and Lesser Poland (+70%). It is least common in Lower Silesian, 2% below average.
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Masovian14 boys born+205%
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Greater Poland5 boys born+79%
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Lesser Poland5 boys born+70%
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Pomeranian2 boys born+5%
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Lower Silesian2 boys born−2%
Tadei as a middle name
Tadei is a first name for 293 men in Poland and a middle name for another 4, a 99/1 split. In the men's middle-name ranking it sits 5808th, between Szlama (4) and Takeshi (4).
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#5806 Szamil4
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#5807 Szlama4
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#5808 Tadei4
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#5809 Takeshi4
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#5810 Takumi4