Mill Stream may be:
Castle Mill Stream, Oxford, England Clewer Mill Stream, Windsor, England Pevensey Mill Stream, East Sussex, England, source of Sackville Sewer Mill Stream Nature Reserve, Suffolk, England The Mill Stream, an 1814 landscape painting by John Constable
See also Millstream (disambiguation) Bush Mill Stream Natural Area Preserve, Virginia, USA "Down by the Old Mill Stream", a song by Tell Taylor