Karviná (Czech pronunciation: [ˈkarvɪnaː]; Polish: Karwina, Polish pronunciation: [karˈvina], German: Karwin) is a city in Moravian-Silesian Region of the Czech Republic, on the Olza River. It is administrative center of Karviná District. Karviná lies in the historical region of Cieszyn Silesia and is one of the most important coal mining centers in the Czech Republic. Together with neighboring towns it forms industrial Ostrava-Karviná Coal Basin.
It has 65,141 inhabitants (2001 census). 8.5% of the population are Slovaks and 8% of the population are Poles. The Polish population has been historically declining. In the past the town had a significant German community. There is also a growing Romani community.