Given name & surname
Tadeusz
“having heart”
Tadeusz is a form of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Meaning & origin
What it means
Tadeusz is a form of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Explained through its name family
Where it comes from
Tadeusz is a form of Thaddeus. Thaddeus has been associated with Aramaic and Greek naming traditions. The precise derivation is uncertain.
Explained through its name family
How it developed
In Polish use, Tadeusz is used as a form of Thaddeus.
The story
Published U.S. birth records include this spelling as early as 1912. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Tadeusz through the years
- Babies since 1880
- 423
- 423 boys · 0 girls
- Most popular year
- 1917
- 26 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- +100%
- Rising fast
By the numbers
The most recent published U.S. birth count for boys is 5 in 2024. Later missing counts do not mean the name went unused. Its largest published annual count for boys was 26 in 1917. Published U.S. population figures for this spelling include 2,696 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Tadeusz’s family of names
In Polish usage, Tadeusz has a diminutive in TADEK. Tadeusz developed from Thaddeus. In Polish usage, Tadeusz has a conventional equivalent in the English form Thaddaeus.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Around the world
Tadeusz has relatives in 18 languages.
24 related names in 18 languages. Point at a dot, or tab to the map and use the arrow keys.
Nicknames & forms 4
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
Across languages 24
Equivalents and cognates in other languages, plus older forms it grew from.
People named Tadeusz
- Tadeusz ReichsteinPolish-Swiss chemist (1897-1996)
- Tadeusz MazowieckiPolish politician and prime minister (1927-2013)
- Tadeusz RóżewiczPolish poet, dramatist and writer (1921–2014)
- Tadeusz Bór-KomorowskiPolish military leader (1895–1966)
- Tadeusz KonwickiPolish writer and film director (1926–2015)
- Tadeusz BorowskiPolish writer and journalist (1922-1951)
- Tadeusz KantorPolish artist (1915–1990)
- Tadeusz ŚlusarskiPolish pole vaulter (1950–1998)
- Tadeusz KutrzebaPolish general (1886–1947)
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Tadeusz, these share its style, era, origin or sound, from outside its own family.
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Alpha
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