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Home › Baby Names Directory › Tadeusz

Tadeusz

♂ Boy

Pronounced tah-DEH-oosh /tɑˈdɛ.uʃ/Medium

Meaning: The Polish form of Thaddeus, the apostle also called Jude. Its Aramaic root is debated. Tadeusz is a Polish national name, borne by Tadeusz Kosciuszko, hero of both the Polish and American revolutions, and by the hero of Poland's national epic, Pan Tadeusz.Low

In 30 seconds: The Polish Thaddeus: Tadeusz is a national name, borne by the hero Kosciuszko (said 'tah-DEH-oosh').
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Origin MediumPolish, Aramaic
MeaningThe Polish form of Thaddeus, the apostle also called Jude. Its Aramaic root is debated. Tadeusz is a Polish national name, borne by Tadeusz Kosciuszko, hero of both the Polish and American revolutions, and by the hero of Poland's national epic, Pan Tadeusz.
U.S. rank (2024)#13944 ↘ Falling
2024 U.S. births5 boys (0.00% of U.S. boys)
Peak year1917
Total births (all-time)≈ 423

Popularity in the U.S. · SSA data

peak 191719122024

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Tadeusz is the Polish form of Thaddeus, the apostle's name whose Aramaic root is debated, so we note that. In Poland the name is national property: Tadeusz Kosciuszko, engineer and general, served in the American Revolution before leading an uprising at home, and Adam Mickiewicz's epic Pan Tadeusz is the country's best-loved poem. Stately, patriotic, and richly Polish (said 'tah-DEH-oosh').

In the U.S. it appears only rarely, mostly in Polish-American families. Rare, historic, and grand.

Did you know? Tadeusz Kosciuszko fought for American independence and then for Poland's — and Poland's national epic is called Pan Tadeusz. Few names carry so much of a country in them (said 'tah-DEH-oosh').
Overall data confidence 55%
References — Tadeusz — Polish form of Thaddeus; Tadeusz Kosciuszko; Pan Tadeusz

Variations

ThaddeusTaddeoTadeo

Nicknames

TadekTad

Famous Bearers

  • Famous bearers coming soon.

If you like Tadeusz…

Thaddeus— the English form of the same name
Kazimierz— a like Polish historic classic
Jacek— a like Polish boys' name
Mateusz— another Polish name
Thadeo— the same biblical feel

Explore names like Tadeusz

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Frequently Asked

What does the name Tadeusz mean?

Tadeusz is the Polish form of Thaddeus, an apostle's name whose Aramaic root is debated. It is a Polish national name.

How do you pronounce Tadeusz?

It's said tah-DEH-oosh /tɑˈdɛ.uʃ/ — three syllables, stress on the second.

Is Tadeusz a boy or girl name?

Tadeusz is a boy's name.

How popular is Tadeusz?

Tadeusz is a rare name for boys in the U.S., a classic in Poland.

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