Sieradz (, German: Schieratz) is a town on the Warta river in central Poland with 44,326 inhabitants (2004). It is situated in the Lódz Voivodeship (since 1999), but was previously the eponymous capital of the Sieradz Voivodeship (1975–1998), and historically one of the minor duchies in Greater Poland.

Sieradz (, German: Schieratz) is a town on the Warta river in central Poland with 44,326 inhabitants (2004). It is situated in the Lódz Voivodeship (since 1999), but was previously the eponymous capital of the Sieradz Voivodeship (1975–1998), and historically one of the minor duchies in Greater Poland.