Old Mill, completed in 1798 as part of Murrays' Mills, is the oldest surviving cotton mill in Manchester, England.[1] Sited on the Rochdale Canal in Ancoats, it was powered by a Boulton and Watt steam engine, and its narrow six-storey brick structure "came to typify the Manchester cotton mill".[2] Old Mill was designated a Grade II* listed building on 19 June 1988.[3]