Thadeous
- US rank
- Unranked
- Syllables
- 3
- Peak
- #5,926 in 1986
0 babies were named Thadeous in the US in 2025.
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US births per million boys, 1979–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Thadeous you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryThadeous first shows up in US birth records in 1979, the first year at least 5 babies got it. It has been in use for 46 years since.
- Best yearIts best year was 1986, when it reached #5,926.
About the name Thadeous
Thadeous is a boy name of Greek and Latin origin. It has 8 letters and 3 syllables, starting with T and ending in “-ous”. US birth records list Thadeous for boys from 1979 to 1994, in 3 of those 16 years. Its best year was 1986, when it ranked #5,926 among boy names. It hasn't been given to 5 or more US babies in a year since 1994, so today it's a genuinely rare choice.
Origin:Greek namesLatin names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 2.9 | 344,828 boys |
| 1980s | 0.3 | 3,030,303 boys |
| 1990s | 0.6 | 1,612,903 boys |
Other spellings of Thadeous
More Greek boy names
- Boy name: Theodore · gift of God
- Boy name: Mateo · gift of God
- Boy name: Lucas · man from Lucania
- Unisex name: Elias · my God is Yahweh
- Boy name: Sebastian · venerable
- Boy name: Leo · lion
- Boy name: Thomas · twin
- Unisex name: Miles · possibly gracious
Questions about the name Thadeous
What is the origin of the name Thadeous?
Thadeous has Greek, Latin roots in our records. Other Greek names include Theodore, Mateo, Lucas.
Is Thadeous a boy or girl name?
Thadeous is a boy name.
How popular is the name Thadeous?
Thadeous is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 1994. It peaked at #5,926 in 1986.