| DADakota Arms | Sturgis | SD | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| DMDakota Mobile Hydraulics | Brookings | SD | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DSDakota Steel & Supply | Rapid City | SD | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| DTDesign Tanks (belle Fourche) | Belle Fourche | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| DODixon Oil Recycling, INC. | Desmet | SD | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| FIFormer / Id No Longer Used Viaflex | Sioux Falls | SD | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| FNFormer / No Longer Operating Here Twin City Fan Companies LTD. | Sioux Falls | SD | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| FCFreeman CO Amg LLC | Yankton | SD | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| HRHi Roller Conveyors | Sioux Falls | SD | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| HCHub City INC | Aberdeen | SD | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| HTHutchinson Technology INC | Sioux Falls | SD | Computer and Electronic Product Manufacturing334000 | — | ◇ UNVERIFIED |
| IMInfinity Machine LLC | Rapid City | SD | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| JIJebro INC | Brandon | SD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JRJensen Rock & Sand INC. | Aberdeen | SD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| LEL.g. Everist, INC. - East Sioux Quarry | Sioux Falls | SD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LSLittelfuse / Symcom | Rapid City | SD | Electrical Equipment, Appliance & Component Manufacturing335314 | — | ◇ UNVERIFIED |
| MIMidcom INC | Watertown | SD | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| MRMinnesota Rubber & Plastics | Watertown | SD | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| MCMitchell Concrete INC. | Mitchell | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MFMolded Fiber Glass Companies | Aberdeen | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MFMolded Fiber Glass Companies | Aberdeen | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MSMorgan Sawmill | Pringle | SD | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| NENeiman Enterprises INC. D.b.a Rushmore Forest Products INC | Hill City | SD | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| NLNewberg Lumber Company, INC. | Custer | SD | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| PIPersona, INC. | Madison | SD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PIPolaris Industries, INC. Spearfish (former) | Spearfish | SD | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| QWQuality Wood Design | Mitchell | SD | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |
 Raven Industries INC. | Sioux Falls | SD | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| RGRiddles Group, INC. | Rapid City | SD | Miscellaneous Manufacturing339911 | — | ◇ UNVERIFIED |
| RCRosebud Concrete INC | Mission | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSaputo Cheese USA INC | Big Stone City | SD | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| SSSd Soybean Processors - Miller Facility | Saint Lawrence | SD | Food Manufacturing311224 | — | ◇ UNVERIFIED |
| SCSolomon Corporation - Flandreau | Flandreau | SD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| SDSouth Dakota Soybean Processors - St. Lawrence | Miller | SD | Food Manufacturing311224 | — | ◇ UNVERIFIED |
| SESpartan Erv | Brandon | SD | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| SESpartan Erv | Brandon | SD | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| SMSpecialty Manufacturing Company INC. | Bath | SD | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| SMSunderman Manufacturing Company | Baltic | SD | Machinery Manufacturing333415 | 1-19 | ◇ UNVERIFIED |
| SCSweetman Const. CO. - Corson Complex | Brandon | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSweetman Const. CO. - E. Rice St. Distribution Complex | Sioux Falls | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSweetman Const. CO. - W. Madison St. Complex | Sioux Falls | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TSTerex South Dakota | Watertown | SD | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TPTops Products Beresford | Beresford | SD | Paper Manufacturing322230 | — | ◇ UNVERIFIED |
| TAToshiba America Information Systems Incorporated Toner Products Division | Mitchell | SD | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| TKTrail King Industries | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| TKTrail King Industries | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| TCTwin City Fan Companies LTD - Brookings Plant | Brookings | SD | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| UAUltramax Ammunition | Rapid City | SD | Fabricated Metal Product Manufacturing332993 | — | ◇ UNVERIFIED |
| VIViaflex, INC. | Brandon | SD | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| WIWinter, INC. | Brookings | SD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
