The Ropičanka (Polish: Ropiczanka) is a 16 kilometres (9.9 mi)-long river in the Frýdek-Místek and Karviná districts, Moravian-Silesian Region, Czech Republic. It is a left tributary of the Olza River, which it enters on the outskirts of Český Těšín. The Ropičanka flows through Řeka, Smilovice, Střítež and Ropice (from source to mouth).