Sir William Hepburn McAlpine, 6th Baronet (12 January 1936 – 4 March 2018) was a British businessman. He was director of the construction company Sir Robert McAlpine. British Rail Class 60 60008 of EWS was named in his honour. McAlpine became involved in a plan to save the Romney, Hythe and Dymchurch Railway and became its chairman.