Simon John Sacher, CBE, (9 June 1940 - 30 August 2016) was a British retailer who spent thirty years with Marks & Spencer, including 25 years as a director. He was the last descendent of the co-founder of the company, Michael Marks, to serve in an executive capacity on the board of the firm. He was a former president of the Royal Philatelic Society London, member of the Council of the Royal College of Music, a governor of the Hebrew University of Jerusalem, one of its vice presidents, and vice-president of the Industry and Parliament Trust. He was chairman of the Westminster Forum, and founder of the Whitehall and Industry Group.