Darius S. Smith (August 19, 1833 – September 14, 1913) was a South Dakota politician.
Their daughter, Sylvia, would marry Joseph H. Bottum, later also a member of the South Dakota Senate.
[1] Sylvia and Joseph's son, Joseph H. Bottum, would become Lieutenant Governor of South Dakota and a member of the United States Senate.
Smith was a member of the South Dakota Senate from 1895 to 1896.
Additionally, he was a county commissioner of Faulk County, South Dakota and a justice of the peace.