Baron Riverdale, of Sheffield in the County of York, is a title in the Peerage of the United Kingdom. It was created in 1935 for the Sheffield steel manufacturer Sir Arthur Balfour, 1st Baronet, Chairman of Arthur Balfour & Co Ltd. He had already been created a baronet, of Sheffield in the County of York, in the Baronetage of the United Kingdom, in 1929. He was succeeded by his eldest son, the second Baron. He was Chairman and President of Balfour & Darwins Ltd (formerly Arthur Balfour & Co Ltd) as well as President of the Association of British Chambers of Commerce. As of 2010 the titles are held by his grandson, the third Baron, who succeeded in 1998. He is the only son of the Hon. Mark Robin Balfour, eldest son of the second Baron.