Sir Walter Leaf (26 November 1852, Norwood, Middlesex – 8 March 1927, Torquay) was an English banker and classical scholar. He published a benchmark edition of Homer's Iliad and was a director of Westminster Bank for many years, eventually becoming its chairman. He was a co-founder and later president of the International Chamber of Commerce, and served as president of the Institute of Bankers, the Hellenic Society and the Classical Association. He married Charlotte Symonds, daughter of John Addington Symonds. He was a Cambridge Apostle.