Beck's Mill is a historic gristmill in Washington County, Indiana, in the United States. It is seven miles (11 km) southwest of Salem. It was built in 1808, rebuilt in 1864 after a fire, one year after John Hunt Morgan demanded ransom for every Washington County mill to be spared from burning. The mill was placed on the National Register of Historic Places in 1990. It was on the list of the Historic Landmarks Foundation of Indiana's 10 Most Endangered historic places in 2005 and 2006, but was not in 2007 because it received funding for its restoration.