Tadeusz

The Polish form of Thaddeus, it is associated with Adam Mickiewicz's 1834 poem Pan Tadeusz, the national epic poem of Poland and compulsory reading in schools. The poem is set in the early 19th century when Poland had been divided between Prussia, Russia, and Austria and tells the story of Tadeusz and Zosia, members of two feuding noble families.

Tadeusz has ranked in the Polish Top 100 since 2011, though it is rare elsewhere.

Pronounced tah-DAY-ush.

As of October 2026, Tadeusz ranked #13944 in US births in 2024 SSA, peaked at #1388 in 1917.