Kazanlak (Bulgarian: Казанлък [kɐzɐnˈɫɤk] is a town in Stara Zagora Province, Bulgaria. It is located in the middle of the Kazanlak Valley, at the foot of the Balkan Mountains, which forms the eastern part of the Rose Valley. It is the administrative centre of the homonymous Kazanlak Municipality. The ancient Thracian city of Seuthopolis was situated near the town.
The town is among the 15 biggest industrial centres in Bulgaria, with a population of 44,760 people as of Dec 2017.