Cushman Kellogg Davis (June 16, 1838November 27, 1900) was an American politician who served as the seventh Governor of Minnesota from January 7, 1874 to January 7, 1876 and as a U.S. Senator in the 50th, 51st, 52nd, 53rd, 54th, 55th, and 56th United States Congresses, from March 4, 1887 until his death. Senator Davis served in the peace treaty talks that ended the Spanish-American War. He was a Republican.