Tadeusz

Tadeusz is a male given name: 98% of people named Tadeusz are men, and it is recorded as male in 2 of the 2 countries covered.

MaleHigh

Male 98%Female 2%

Verdict: Male
Male / female split: 98% male / 2% female
Confidence: High (64 or more weighted country observations)
Most common in: Poland, United States
US births since 1880: 376 male / 0 female
Data: nam_dict (GFDL) + US SSA
Updated: 2026-09-11

How to address Tadeusz

When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Tadeusz," in English, "Guten Tag Tadeusz," in German. Tadeusz is a male given name: about 98% of people named Tadeusz are men. A quick look at a profile confirms it for certain.

Ready-made greetings in six languages

English

Dear Tadeusz,

German

Guten Tag Tadeusz,

French

Bonjour Tadeusz,

Spanish

Estimado/a Tadeusz:

Chinese

Tadeusz您好：

Japanese

Tadeusz様

English

Hi Tadeusz,

German

Hi Tadeusz,

French

Salut Tadeusz,

Spanish

Hola Tadeusz,

Chinese

Tadeusz你好：

Japanese

Tadeuszさん

Greeting generator

This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.

Country breakdown

Gender of the name Tadeusz by country (nam_dict, 55 country columns)
Country	How common	Usually	Male share
Poland	common	man's name	98%
United States	rare	man's name	100%

United States birth data

376 male · 0 female · 376 births recorded

Male 100%Female 0%

Since 1980: 100% male.

Frequently asked questions

Is Tadeusz a male or female name?

Tadeusz is a male given name: 98% of people named Tadeusz are men, and it is recorded as male in 2 of the 2 countries covered.

How do I address Tadeusz in an email?

Is Tadeusz a unisex name?

Tadeusz is not a unisex name: 98% of people named Tadeusz are men. Tadeusz leans strongly male overall.

Sources

Gender by country: nam_dict, the c't first-names dictionary by Joerg Michael, roughly 44,000 names across 55 countries, licensed GFDL. US frequencies: United States Social Security Administration baby-name data, public domain. Method: how we classify names. Full dataset: data & licences. Data built 2026-09-11.

Cite this page

DearWho, "Is Tadeusz a male or female name?", https://dearwho.vercel.app/name/tadeusz (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.

BibTeX

@misc{dearwho_tadeusz,
  title  = {Is Tadeusz a male or female name?},
  author = {{DearWho}},
  year   = {2026},
  url    = {https://dearwho.vercel.app/name/tadeusz},
  note   = {Data: nam_dict (GFDL), US SSA public domain}
}