Sieradz Voivodship (Polish: województwo sieradzkie) was a unit of administrative division and local government in Poland in years 1975-1998, superseded by Lodz Voivodship.
Capital city: Sieradz
Major cities and towns: (population in 1995):
- Zdunska Wola (45,900);
- Sieradz (44,700);
- Wielun (25,500);
- Lask (20,200).