Kowalski

Kowalski (Polish pronunciation: [kɔˈvalskʲi]; feminine: Kowalska, plural: Kowalscy) is the second most common surname in Poland (140,471 people in 2009). In January 2026, the Polish register PESEL listed 67,308 women and 66,589 men with the surname. Kowalski surname is derived from the word kowal, meaning "[black]smith". "Jan Kowalski" is used as a placeholder name in Poland.