Zlonice is a market town in Central Bohemian Region, Czech Republic. It is located 6 km north of Slaný and has a population of 2,279 (2006).
Several valuable works of Baroque architecture have been preserved in Zlonice, for example the Assumption church (by F.M. Kaňka) and the rectory (by K.I. Dientzenhofer). The former hospital building houses the Memorial of composer Antonín Dvořák who lived in Zlonice from 1853 to 1856; he nicknamed his First Symphony The Bells of Zlonice. There is also a small Railway Museum at the local train station.
It was the birthplace of Wenzel Krumpholz, a mandolin and violin player, friend to Ludwig von Beethoven.