Bank Bottom Mill, later known as Marsden Mill, was from 1824 an important centre for the production of woollen cloth in Marsden, West Yorkshire, England. Originally a fulling mill, Bank Bottom Mill reached its heyday in the late nineteenth and early twentieth centuries under the ownership of the Crowther family, in particular John Edward Crowther, a businessman and philanthropist. However, the cloth industry declined in the late twentieth century, and production of woollen cloth finally ceased in 2003.