Sylvanus Blanchard "Samuel" Newton (December 4, 1868 – April 30, 1932) was an American football player and coach. He served as the head football coach at Pennsylvania State University (1896–1898), Lafayette College (1899–1901, 1911), Lehigh University (1902–1905), and Williams College (1907, 1909–1910), compiling a career college football coaching record of 83–58–5.