Lt-Col. Samuel Simpson Sharpe DSO, M.P. (March 13, 1873 – May 25, 1918) was a lawyer, political figure, and soldier from Ontario, Canada. He represented Ontario North in the House of Commons of Canada from 1909 to 1917 as a Conservative and from 1917 to 1918 as a Unionist Party member. From 1916 until his death, he served as a Member of Parliament while on active duty with the Canadian Expeditionary Force. Along with George Harold Baker, he is one of only two sitting Canadian MPs to die on military service.