Donald Watson Davis (November 3, 1849 – June 4, 1906) was a politician from Northwest Territories, Canada.
Born in Londonderry, Vermont, Donald was first elected to the Canadian House of Commons in the 1887 Canadian federal election to be one of the first Members of Parliament to represent the Northwest Territories. He represented the new Alberta (Provisional District) riding. He served a second term being re-elected in 1891 Canadian federal election.