Given name & surname
Tadeo
“having heart”
Tadeo is a form of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Original Spanishตาเดโอ
Meaning & origin
What it means
In Spanish use, Tadeo carries the interpretation “having heart.” Tadeo is a form of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Combines direct and name-family evidence
Where it comes from
An origin associated with this spelling is Spanish.
How it developed
In Spanish use, Tadeo is used as a form of Thaddeus.
The story
Published U.S. birth records include this spelling as early as 1968. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Tadeo through the years
- Babies since 1880
- 5,843
- 5,843 boys · 0 girls
- Most popular year
- 2024
- 782 babies
- 2025
- 753
- #427 for boys
- 2021–25 vs 2016–20
- +122%
- Rising fast
Where it’s given
By the numbers
In 2025, this name appeared in 753 U.S. birth records for boys, ranking No. 427 among boys’ names. Average annual use for boys was 122.1% higher in 2021–2025 than in 2016–2020. In 2025, California had the largest reported state-level birth count for boys with this name (192). Published U.S. population figures for this spelling include 2,089 as a first name in 2020; 2,541 as a surname in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Tadeo’s family of names
Tadeo developed from Thaddeus. In Spanish usage, Tadeo has a conventional equivalent in the Polish form Tadeusz. Tadeo is a form of Thaddeus.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Around the world
Tadeo has relatives in 10 languages. Lines run from its Spanish roots to each of them.
Spanishwhere Tadeo comes from · 1 name
Nicknames & forms 3
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 2
The same name written differently, including transliterations into other scripts.
Across languages 18
Equivalents and cognates in other languages, plus older forms it grew from.
People named Tadeo
Listed by how widely each person is written about, which says nothing about the name itself.
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