捷克捷欣(德语：Teschen，切申)是捷克的城镇，位于该国东部，由摩拉维亚-西利西亚州负责管辖，毗邻与乌克兰接壤的边境，面积33.81平方公里，海拔高度270米，2011年人口25,750。原是切申西郊，属于奥地利西里西亚（后来的捷克西里西亚）。一战之后切申先是全部划归捷克，后来在国联调整下主城区（Osla河东岸）划归波兰，河西岸郊区留在捷克，即捷欣。二战前的慕尼黑协定，协议将捷克所属切申全部给予波兰，波军在捷克部分的切申搞了隆重的入城式。二战之后切申西部重新归还捷克，城中占多数的德意志人分别被捷克和波兰驱逐。

Český Těšín or Czech Teschen (Czech pronunciation:[ˈtʃɛskiː ˈcɛʃiːn]; Silesian:Czeski Ćeszyń, Polish:Czeski Cieszyn , German:Tschechisch-Teschen) is a town in the Karviná District, Moravian-Silesian Region of the Czech Republic. The town is commonly known in the region as just Těšín (Silesian:Ćeszyń, Polish:Cieszyn). It lies on the west bank of the Olza river, in the heart of the historical region of Cieszyn Silesia. Until the 1920 division of the region between Poland and Czechoslovakia it was just a western suburb of the town of Teschen, which after the division fell to Poland as Cieszyn. The combined population of the Czech and Polish parts of the city is around 60,000 (25,000 in Těšín, 35,000 in Cieszyn).