Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| South Branch Dry Creek | Stream | | Hutchinson | 43 21 35 N | 097 49 16 W |
| South Branch Duck Creek | Stream | | Harding | 45 20 53 N | 103 27 32 W |
| South Branch Green Creek | Stream | | Union | 43 00 27 N | 096 31 38 W |
| South Branch Grummit Canyon Creek | Stream | | Butte | 44 42 06 N | 104 00 30 W |
| South Branch Lonetree Creek | Stream | | Hutchinson | 43 13 51 N | 097 40 54 W |
| South Branch Pine Creek | Stream | | Mellette | 43 31 56 N | 100 53 26 W |
| South Branch Prairie Creek | Stream | | Pennington | 44 02 27 N | 103 29 06 W |
| South Branch Thunder Butte Creek | Stream | | Perkins | 45 32 38 N | 102 41 33 W |
| South Bull Creek | Stream | | Harding | 45 48 04 N | 103 37 18 W |
| South Buttes Dam | Dam | 911 | Harding | 45 19 54 N | 103 11 32 W |
| South Canal | Canal | 872 | Butte | 44 38 27 N | 103 29 25 W |
| South Canyon | Valley | | Pennington | 44 05 21 N | 103 18 11 W |
| South Canyon Country Estates | Populated Place | 1256 | Pennington | 44 06 07 N | 103 21 47 W |
| South Canyon School | School | 1031 | Pennington | 44 05 04 N | 103 17 05 W |
| South Cave Hills | Range | 1021 | Harding | 45 44 35 N | 103 32 28 W |
| South Chapelle Creek | Stream | | Hughes | 44 18 00 N | 099 53 21 W |
| South Clark School | School | 537 | Faulk | 45 10 21 N | 099 22 11 W |
| South Coteau Lake | Lake | 557 | Deuel | 44 49 45 N | 096 43 36 W |
| South Cottonwood Creek | Stream | | Butte | 45 12 29 N | 103 09 07 W |
| South Creek | Stream | | Haakon | 44 01 04 N | 101 21 17 W |
| South Creek | Stream | | Haakon | 44 24 01 N | 101 32 10 W |
| South Creek | Stream | | Jones | 44 05 47 N | 101 00 49 W |
| South Creek Church | Church | 739 | Jackson | 43 56 13 N | 101 28 00 W |
| South Creek School | School | 733 | Jackson | 43 56 12 N | 101 29 01 W |
| South Creighton School | School | 795 | Pennington | 44 16 21 N | 102 10 04 W |
| South Dakota Hand Grazing Association Dam | Dam | 508 | Hyde | 44 38 18 N | 099 21 13 W |
| South Dakota Human Services Center | Building | 396 | Yankton | 42 54 53 N | 097 24 06 W |
| South Dakota Komes 1 Dam | Dam | 832 | Meade | 44 33 36 N | 103 04 26 W |
| South Dakota Park | Populated Place | 305 | Roberts | 45 25 03 N | 096 42 03 W |
| South Dakota Range Experiment Station | Locale | 723 | Jackson | 43 57 38 N | 101 51 29 W |
| South Dakota School for the Blind | School | 396 | Brown | 45 26 53 N | 098 28 53 W |
| South Dakota School of Mines and Technology - Isabel a | School | 981 | Pennington | 44 04 25 N | 103 12 22 W |
| South Dakota School of Mines and Technology Geology Museum | Building | 981 | Pennington | 44 04 25 N | 103 12 22 W |
| South Dakota State Soldiers Home | Locale | 1109 | Fall River | 43 26 17 N | 103 29 36 W |
| South Dakota State University | School | 500 | Brookings | 44 19 10 N | 096 47 18 W |
| South Dakota State University Pasture Research Center | School | 506 | Faulk | 45 12 04 N | 099 12 29 W |
| South Dam | Dam | 892 | Fall River | 43 28 12 N | 103 04 32 W |
| South Double R Creek | Stream | | Butte | 44 53 40 N | 103 12 12 W |
| South Elrod Cemetery | Cemetery | 550 | Clark | 44 50 01 N | 097 34 53 W |
| South End | Locale | 566 | Day | 45 28 33 N | 097 16 01 W |
| South Fork Alkali Creek | Stream | | Fall River | 43 02 32 N | 103 57 18 W |
| South Fork Ash Creek | Stream | | Haakon | 44 17 58 N | 101 56 49 W |
| South Fork Bad River | Stream | | Haakon | 44 02 07 N | 101 39 58 W |
| South Fork Bear Gulch | Valley | | Custer | 43 48 18 N | 103 22 40 W |
| South Fork Blacktail Creek | Stream | | Fall River | 43 14 14 N | 102 49 56 W |
| South Fork Bridger Creek | Stream | | Haakon | 44 19 56 N | 101 51 20 W |
| South Fork Castle Creek | Stream | | Pennington | 44 00 47 N | 103 49 53 W |
| South Fork Cedar Creek | Stream | | Lyman | 44 08 01 N | 099 58 44 W |
| South Fork Crooked Creek | Stream | | Pennington | 44 01 38 N | 102 25 32 W |
| South Fork Flint Rock Creek | Stream | | Ziebach | 45 07 38 N | 101 58 41 W |
| South Fork French Creek | Stream | | Custer | 43 39 38 N | 103 02 01 W |
| South Fork French Creek | Stream | | Custer | 43 46 52 N | 103 43 13 W |
| South Fork Grand River | Stream | | Perkins | 45 43 30 N | 102 17 02 W |
| South Fork Lame Johnny Creek | Stream | | Custer | 43 38 31 N | 103 20 55 W |
| South Fork Medicine Knoll Creek | Stream | | Hughes | 44 31 30 N | 099 58 01 W |
| South Fork Moreau River | Stream | | Perkins | 45 08 42 N | 102 49 51 W |
| South Fork Moss Agate Creek | Stream | | Fall River | 43 20 28 N | 104 01 19 W |
| South Fork of Cedar Creek | Stream | | Bennett | 43 05 25 N | 101 15 04 W |
| South Fork Owl Creek | Stream | | Butte | 44 52 01 N | 103 54 18 W |
| South Fork Pearl Creek | Stream | | Beadle | 44 15 27 N | 098 03 55 W |
| South Fork Rainy Creek | Stream | | Pennington | 44 14 17 N | 102 09 58 W |
| South Fork Rapid Creek | Stream | | Pennington | 44 07 52 N | 103 44 10 W |
| South Fork Sage Creek | Stream | | Pennington | 43 53 56 N | 102 24 09 W |
| South Fork School | School | 1014 | Custer | 43 36 15 N | 103 08 20 W |
| South Fork Schoolhouse Gulch | Valley | | Lawrence | 44 19 49 N | 104 00 22 W |
| South Fork Snake Creek | Stream | | Spink | 45 01 52 N | 098 34 38 W |
| South Fork Twelvemile Creek | Stream | | Hutchinson | 43 27 13 N | 097 50 01 W |
| South Fork Whaley Gulch | Valley | | Pennington | 43 57 52 N | 103 31 20 W |
| South Fork Whetstone Creek | Stream | | Gregory | 43 11 00 N | 098 56 49 W |
| South Fork Whetstone River | Stream | | Grant | 45 16 12 N | 096 34 04 W |
| South Grand River Cemetery | Cemetery | 808 | Perkins | 45 37 56 N | 103 00 01 W |
| South Hand Grazing Association Dam | Dam | 508 | Hyde | 44 38 18 N | 099 21 13 W |
| South Highland School | School | 911 | Meade | 44 32 00 N | 103 18 27 W |
| South Illinois School | School | 537 | Hyde | 44 44 12 N | 099 29 27 W |
| South Ironwood Creek | Stream | | Todd | 43 13 42 N | 100 57 03 W |
| South Jack Creek | Stream | | Harding | 45 44 47 N | 103 23 18 W |
| South Jackson Public Shooting Area | Park | 534 | McPherson | 45 36 19 N | 099 39 32 W |
| South Junior High School | School | 992 | Pennington | 44 03 47 N | 103 13 01 W |
| South King School | School | 801 | Meade | 44 16 11 N | 102 36 31 W |
| South Knappie Canyon | Valley | | Fall River | 43 22 19 N | 103 26 03 W |
| South Lake Campbell Cemetery | Cemetery | 513 | Lake | 44 10 01 N | 096 55 05 W |
| South Liberty School | School | 645 | Jones | 43 50 59 N | 100 34 03 W |
| South Lincoln School | School | 711 | Tripp | 43 06 15 N | 099 35 36 W |
| South Lodi Cemetery | Cemetery | 406 | Clay | 42 57 11 N | 097 02 31 W |
| South Long Hollow Creek | Stream | | Fall River | 43 08 56 N | 103 36 02 W |
| South Mary Well | Well | 914 | Harding | 45 18 45 N | 103 01 07 W |
| South Pleasant View School | School | 976 | Meade | 44 37 07 N | 102 39 43 W |
| South Poinsett Access Area | Park | 500 | Brookings | 44 32 26 N | 097 04 20 W |
| South Prong Wolf Creek | Stream | | Shannon | 43 01 31 N | 102 30 12 W |
| South Punished Womans State Public Shooting Area | Park | 570 | Codington | 45 06 27 N | 096 56 27 W |
| South Red Iron Lake | Lake | 558 | Marshall | 45 40 11 N | 097 19 05 W |
| South Reinoehl Creek | Stream | | Perkins | 45 18 50 N | 102 25 52 W |
| South Sand Creek | Stream | | Harding | 45 16 30 N | 103 33 27 W |
| South Scalp Creek | Stream | | Gregory | 43 05 19 N | 098 46 04 W |
| South Scalp Creek Recreation Area | Park | 446 | Gregory | 43 06 01 N | 098 46 19 W |
| South Scatterwood Lake | Lake | 408 | Faulk | 45 12 41 N | 098 45 03 W |
| South Shore | Populated Place | 572 | Codington | 45 06 21 N | 096 55 43 W |
| South Shore Recreation Area | Park | 469 | Gregory | 43 03 01 N | 098 35 43 W |
| South Side Ditch | Canal | 927 | Pennington | 44 00 39 N | 103 04 57 W |
| South Sioux School | School | 433 | Minnehaha | 43 30 52 N | 096 44 09 W |
| South Slate Creek | Stream | | Pennington | 43 59 26 N | 103 42 59 W |
| South Slate School | School | 1931 | Pennington | 43 57 22 N | 103 43 57 W |
| South Slough | Lake | 507 | Deuel | 44 41 44 N | 096 28 06 W |
| South Stagebarn Canyon | Valley | | Meade | 44 12 01 N | 103 22 55 W |
| South Sulphur Creek | Stream | | Meade | 44 51 41 N | 102 50 31 W |
| South Town Mall | Locale | 1018 | Pennington | 44 03 48 N | 103 13 53 W |
| South Trinity Cemetery | Cemetery | 523 | Kingsbury | 44 31 41 N | 097 12 34 W |
| South Victoria Creek | Stream | | Pennington | 44 00 54 N | 103 24 41 W |
| South Waubay Lake | Lake | 545 | Day | 45 23 17 N | 097 27 12 W |
| South Wheeler Recreation Area | Park | 452 | Gregory | 43 08 14 N | 098 48 33 W |