Is Tadeusz a boy's or girl's name?

Tadeusz is primarily a boy's name.

When was Tadeusz most popular?

Tadeusz reached its peak popularity in 1917 with 26 births that year. It is currently ranked #13944 in the U.S.

How popular is the name Tadeusz?

Tadeusz is currently ranked #13944 in the U.S. (2024). It has been given to 423 babies since 1912.

Tadeusz

An uncommon Polish pick — distinctive and rare.

Boy's namePolishDeclining

#13944▼ 5116in 2024

Meaning & Origin

a male given name, equivalent to English Thaddaeus

Tadeusz is a boy's baby name of Polish origin, the Polish form of Thaddeus, from the Aramaic meaning 'heart' or 'praise.' Tadeusz Kościuszko — the Polish-Lithuanian military leader who fought in both the American Revolutionary War and the Polish uprising — is the most famous bearer of this name.

A name of extraordinary patriotic weight in Poland, Tadeusz carries the legacy of one of the Atlantic world's most important freedom fighters.

Compare Tadeusz with another name

Popularity Over Time

Tadeusz has 50+ years of history in the U.S., first appearing in 1912.

Popularity by Decade

Decade-by-decade popularity data for Tadeusz
Decade	Births	Avg Rank	Trend
2020s	40	#10562	▲
2010s	37	#12095	▲
2000s	12	#10451	▼
1990s	18	#8990	▼
1980s	33	#6990	▲
1970s	22	#4564	▼
1960s	35	#3222	▲
1950s	24	#3965	▲
1930s	6	#3956	▼
1920s	95	#2771	—
1910s	101	#2464	—

Year-by-Year Data

View complete yearly data(50 years, 1912–2024)

Year-by-year popularity data for the name Tadeusz
Year	Births	Rank	Change
2024	5	#13944	-4 (-44.4%)
2023	9	#8828	-4 (-30.8%)
2022	13	#6772	+8 (160.0%)
2021	5	#13824	-3 (-37.5%)
2020	8	#9443	+1 (14.3%)
2019	7	#10663	0
2017	7	#10626	+2 (40.0%)
2015	5	#13799	-3 (-37.5%)
2014	8	#9517	+3 (60.0%)
2012	5	#13963	0
2010	5	#14000	-1 (-16.7%)
2003	6	#10707	0
2000	6	#10195	+1 (20.0%)
1998	5	#11102	-2 (-28.6%)
1996	7	#7869	+1 (16.7%)
1990	6	#7999	+1 (20.0%)
1987	5	#7999	0
1985	5	#7460	0
1984	5	#7204	-3 (-37.5%)
1982	8	#4938	+3 (60.0%)

Source: U.S. Social Security Administration. Showing years with 5+ recorded births.

Last updated May 2026 · Data: U.S. Social Security Administration (1912–2024) · Methodology