Hamr is the name of several locations in the Czech Republic:
- Hamr (Jindřichův Hradec District), a village in South Bohemian Region (Jindřichův Hradec District)
- Hamr na Jezeře, a village in Liberec Region (Česká Lípa District)
- village Hamr, administrative part of city Litvínov, Ústí nad Labem Region (Most District)
- village Hamr, administrative part of village Val, South Bohemian Region (Tábor District)
Hamr is a village and municipality ( obec) in Jindřichův Hradec District in the South Bohemian Region of the Czech Republic.
The municipality covers an area of , and has a population of 344 (as at 3 July 2006).
Hamr lies approximately south of Jindřichův Hradec, east of České Budějovice, and south of Prague.