克罗托申（德语：Krotoschin）是波兰的城镇，位于该国西部，由大波兰省负责管辖，面积22.55平方公里，海拔高度130米，该地区自石器时代有人类居住，2010年人口29,485。

Krotoszyn [krɔˈtɔʂɨn] (German:Krotoschin, Yiddish:קארטשין‎ Kortshin) is a town in central Poland with 30,010 inhabitants as of 2005. It has been part of the Greater Poland Voivodeship since 1999; it was within Kalisz Voivodeship from 1975 to 1998.

Historically part of the Kingdom of Poland, during the German rule in the 19th century after the Partitions of Poland, the town was located in the Prussian province of Posen. The dominant trade is in grain and seeds, and the headquarters of the Polish branch of Mahle GmbH is located there. The castle of Krotoszyn was the centre of a mediatized principality formed in 1819 out of the holdings of the Prussian crown and granted to the prince of Thurn und Taxis in compensation for his relinquishing control over the Prussian postal system.