also see: South Dakota Genealogy Links
here at genealogylinks.net - links to censuses,
cemeteries, passenger lists etc

 

Brule County, South Dakota Methodist Church Marriages indexed by Bride or Groom
Kingsbury County, South Dakota Marriages found in the DeSmet "Leader" 1883-1886
How to Obtain Marriage Records from the South Dakota Dept of Health most vital records offices have downloadable marriage certificate request application forms
Minnehaha County  Marriages 1872-1887 by GROOM or BRIDE
Minnehaha County  Marriages 1879-1892 by GROOM or BRIDE
Minnehaha County  Marriages 1893-1894 by GROOM or BRIDE
USGenWeb has one of the largest collections of free access online genealogy resources, including many marriage databases
US GenWeb Archives Marriage Project - South Dakota

Additional Resources at Ancestry.com

South Dakota Births, 1856-1903
South Dakota Marriages, 1905-1949

South Dakota State Databases over 300 databases for South Dakota here, including military rosters, censuses, marriage and birth records