- Source: Pietrzak
- Lechia Gdańsk
- Wojciech Brzozowski (ahli hukum)
- Angkatan Darat Polandia Kongres
- Akademio de Esperanto
- Pioglitazon
- Serangan Sybil
- Paweł Adamowicz
- Garis waktu penghapusan perbudakan
- Daftar pemenang Hadiah Ig Nobel
- Armia Krajowa
- Pietrzak
- Murders of Jan Pawel and Quiana Jenkins Pietrzak
- Bogusław Pietrzak
- Jan Pietrzak
- Jim Pietrzak
- Henryk Pietrzak
- Jerzy Pietrzak
- Włodzimierz Pietrzak
- Rafał Pietrzak
- Michał Pietrzak
Pietrzak is a Polish surname, it may refer to:
Bogusław Pietrzak, Polish football manager
Henryk Pietrzak (1914–1990), Polish fighter ace
Jan Pietrzak (born 1937), Polish comedian
Jim Pietrzak (1953–2018), American football player
Konstantin Petrzhak (1907–1998), Soviet physicist of Polish origin
Łucja Pietrzak (born 1995), Polish cyclist
Michał Pietrzak (born 1989), Polish athlete
Rafał Pietrzak (born 1992), Polish footballer
Włodzimierz Pietrzak (1913–1944), Polish poet