Havířov, town, northeastern Czech Republic. It lies along the Lučina River (a tributary of the Ostravice), just southeast of Ostrava. It is a planned new town in the Czech part of the Upper Silesian coalfield and is associated with the Ostrava industrial region. Chartered in 1955, it quickly grew to become one of the Czech Republic’s larger cities. Pop. (2007 est.) 84,219.