| HSHills Stainless Steel and Equipment Company | Sioux Falls | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| HWHoh Water Technology, INC. | Tea | SD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| HMHomestead Meats LLC | Brookings | SD | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| HMHomestead Meats LLC | Flandreau | SD | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| HCHub City Energy | Watertown | SD | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| HMHyland Machining | Madison | SD | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| IIdic-sdc | Belle Fourche | SD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| IDInformational Data Technologies LLC | Watertown | SD | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| IFInterbake Foods, INC. | North Sioux City | SD | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| JBJefferson Beer Enterprise LLC | Jefferson | SD | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| JSJewelryMonk Studio and Training Center Jewelry by DeCory | Rapid City | SD | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| JKJ.M. Kingsbury Family Brewing Co. | Rapid City | SD | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| JVJustarah Ventures LLC | Tea | SD | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| KRK&p Reynolds LLC | Watertown | SD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| KKugler | Rapid City | SD | Chemical Manufacturing325311 | — | ◇ UNVERIFIED |
| LIL.J. Industries, Inc. | Sioux Falls | SD | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| LDLo's Designs LLC | Yankton | SD | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MWMacksteel Warehouse, INC. | Watertown | SD | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| MJMaguire Jones Boys II, LLC | Sioux Falls | SD | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| MTMaguire Tank, Inc. | Sioux Falls | SD | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| MIMalanden INC | Sioux Falls | SD | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| MWMcintosh Watauga Equity | Mcintosh | SD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| MBMeyer's Bakery Co | Sioux Falls | SD | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| MUMidcom Unit Midtex Division (former Location) | Watertown | SD | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| MSMidwest Stone Manufacturing Company | Tea | SD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MKMindless Kreations LLC | Whitewood | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MGMNY Group, LLC | Madison | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MFMolded Fiber Glass /south Dakota | Aberdeen | SD | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| MWMountain West, LLC | Piedmont | SD | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MRM & R 281 Locker LLC | Stickney | SD | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| MPMueller Pallets, LLC | Sioux Falls | SD | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| MTMuskrat Technologies | Buffalo | SD | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMMyer-hall Machine Works INC | Canton | SD | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| NSNatural Stone Manufacturers Inc | Lennox | SD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| NSNatural Stone Manufacturers, Inc. | Lennox | SD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| NSNuEra Steel LLC | Viborg | SD | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| PBPark Bench Management LLC | Black Hawk | SD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PTPermian Tank & Manufacturing INC Belle Fourche Plant | Belle Fourche | SD | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| PIPrairie Industries, LLC | Vale | SD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PSPrairie Stone LLC | New Effington | SD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| RCRapid City Apb | Rapid City | SD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RPRapid Packaging Company, INC. | Brookings | SD | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| RMRay Manufacturing LLC | Watertown | SD | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| RBReaves Building Systems | Sioux Falls | SD | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| RMRecycled Materials Inc | Lennox | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| RLRizco, LLC | Rapid City | SD | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| RMRoto Mold, L.L.C. | Tea | SD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SBSab Biotherapeutics | Sioux Falls | SD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SRSalem Ready Mix, LLC | Salem | SD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SESamson Exhaust | Sturgis | SD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
