Rock Mill is a Grade II listed[1] smock mill at Washington, West Sussex, England, which has been converted to residential use.

Rock Mill was built in 1823.

[2] The mill was working at the outbreak of the First World War but was converted to a house in about 1919, using the machinery as decoration.

[3] The composer John Ireland bought the mill in 1953[2] and died there in 1962.

[2] Rock Mill is a three-storey smock mill on a single-storey base, formerly carrying a beehive cap winded by a fantail.