Turnov is a town in Semily District in the Liberec Region of the Czech Republic. It has about 14,000 inhabitants. It is a traditional centre for gemstone polishing, glass craftsmanship and arts. The historic town centre is well preserved and is protected by law as an urban monument zone.

Semily District is a district in the Liberec Region of the Czech Republic. Its capital is the town of Semily, but the most populated town is Turnov.