Piechowski
Piechowski is a surname. Notable people with the surname include:

 Kazimierz Piechowski (1919–2017), Polish prisoner
 Laurin von Piechowski (born 1994), German footballer
 Mateusz Piechowski (born 1995), Polish handball player
 Paul Piechowski (1892–1966), Lutheran theologian and physician
 Michael Piechowski (born 1933), American psychologist