Tadeusz

Meaning & origin

Tadeusz is a distinctly Polish masculine name with deep historical and literary roots. Although it has never ranked among the top baby names in the U.S., it reached its highest recorded usage in 1917, when it saw somewhat greater use due to immigration patterns. Since then, its usage has remained very modest, with a stable trajectory over the past century. The name's association with Adam Mickiewicz's epic poem Pan Tadeusz imbues it with strong cultural significance in Polish communities. In 2025, while it does not appear in the Social Security top rankings, its 1 in every N births figure is too small to calculate nationally, indicating minimal but persistent use. Tadeusz remains an enduring choice among families preserving Polish heritage, though it has not seen a revival in broader American naming trends.

Tadeusz is the Polish form of Thaddaeus, derived from the Aramaic name Taḏay, meaning 'heart' or 'courageous,' though it has long been associated with the Greek 'Theodoros' (gift of God) via folk etymology. In Poland, the name gained prominence through the 13th-century saint Tadeusz (Jude the Apostle) and later through the patriotic poem 'Pan Tadeusz' by Adam Mickiewicz. It has remained a classic male name in Poland, consistently used since the early 20th century.