Weidner Mill is a historic grist mill complex located on Manatawny Creek in Amity Township, Berks County, Pennsylvania. The complex consists of the -story stone-and-brick banked mill (1855); -story, stucco-over-stone farmhouse (c. 1840); -story, stucco-over-stone, combined smokehouse and spring house (c. 1820); -story, stucco-over-stone tenant house (c. 1820); stucco-over-stone bank barn (c. 1850); and the millrace and dam. The mill ceased operation in the 1940s. The mill was built as part of a working farm.
It was listed on the National Register of Historic Places in 1990.