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The short answer
Tadeo is a masculine name used in Spanish. Behind the Name describes it this way: "Spanish form of Thaddeus." It ranked #427 for boys in the United States in 2025.
Meaning and etymology
According to Behind the Name, spanish form of Thaddeus. The entry lists its usage as Spanish.
Editorial confidence: likely
Popularity
Tadeo ranked #427 for boys in the United States in 2025. The figure comes from the Social Security Administration's national file for that year.
| Region | Year | Rank | Source |
|---|---|---|---|
| United States | 2025 | #427 | ssa-2025 |
If you like this name
Names that Behind the Name files under the same origin (Spanish) and that sit near Tadeo in the 2025 American rankings.
Similar by origin
Frequently asked questions
What does the name Tadeo mean?
Behind the Name does not give Tadeo a one-word meaning. It describes the name as follows: spanish form of Thaddeus.
Is Tadeo a popular name?
Tadeo ranked #427 for boys in the United States in 2025. (Social Security Administration data).
Is Tadeo a boy's or a girl's name?
In the 2025 SSA data Tadeo appears in the boys' list; Behind the Name labels it masculine.
Sources
- Behind the Name: Meaning, origin and history of the name Tadeo — supports meaning, usage, pronunciation, variants.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.
