Given name
Thadeus
“having heart”
Thadeus is a variant of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Meaning & origin
What it means
Thadeus is a variant of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Explained through its name family
Where it comes from
Thadeus is a variant of Thaddeus. Thaddeus has been associated with Aramaic and Greek naming traditions. The precise derivation is uncertain.
Explained through its name family
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
Thadeus through the years
- Babies since 1880
- 1,123
- 1,123 boys · 0 girls
- Most popular year
- 1918
- 27 babies
- 2025
- 6
- #11,845 for boys
- 2021–25 vs 2016–20
- −12%
- Easing
By the numbers
In 2025, this name appeared in 6 U.S. birth records for boys, ranking No. 11,845 among boys’ names. The recent annual counts are too incomplete to establish a ten-year comparison. Published U.S. population figures for this spelling include 852 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.
Thadeus’s family of names
Thadeus has a related form in Thaddeus. In English usage, Thadeus has a conventional equivalent in the Russian form Фадей.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Nicknames & forms 1
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 1
Equivalents and cognates in other languages, plus older forms it grew from.
People named Thadeus
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Thadeus, these share its style, era, origin or sound, from outside its own family.
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