Sieradz Voivodeship
Sieradz was the seat of two voivodeships in Poland:
- In the Kingdom of Poland-Lithuania: Sieradz Voivodeship (until 1793)
- In the People's Republic of Poland and the Third Republic: Sieradz Voivodeship (1975–1998)
Sieradz was the seat of two voivodeships in Poland: