Dame Sarah Anne Lees DBE DStJ (née Buckley; 13 November 1842 – 14 April 1935) of Werneth Park, Oldham, was an English Liberal politician, activist, and philanthropist who was the first female councillor elected in Lancashire (1907–19) and the first female Mayor of Oldham (1910–11), only the second woman in England to hold such a position.