| SCSandidge Concrete - Jefferson City | Jefferson City | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SLSara Lee Bakery Group | Springfield | MO | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| SBS & B Pharma Dba Alkem Laboratories | Fenton | MO | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SFSchreiber Foods INC. | Monett | MO | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| SFSchreiber Foods, INC. - Ddn | Clinton | MO | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| SIScore, INC. | Pevely | MO | Fabricated Metal Product Manufacturing332997 | — | ◇ UNVERIFIED |
| SSScott Salvage Yard LLC | Humansville | MO | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| SCScott's Concrete Camdenton | Camdenton | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SMScotts Miracle-gro | Wright City | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| SCScroll Compressors LLC Emerson Climate Tech-warehouse | Lebanon | MO | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| SPSees Post & Lumber Superfund Site | Marshfield | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SISefar INC | Kansas City | MO | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| SISemco Incorporated Chillicothe | Chillicothe | MO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SPSemco Plastic Company | Saint Louis | MO | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◇ UNVERIFIED |
| SOSemo Operating Company | Advance | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSensient Colors | High Ridge | MO | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| SESensory Effects Flavor Systems/balchem | Bridgeton | MO | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| SMService Midwest | St Charles | MO | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SSService & Supply Cooperative | Bowling Green | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| SMSexton Metalcraft Inc-raytown | Raytown | MO | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| SCShamrock Cabinet & Appliance | Raytown | MO | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| STSherer Truck Equipment INC | Riverside | MO | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| SWSherwin Williams #703202 | Springfield | MO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SWSherwin Williams #708470 | St Louis | MO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SLShiloh Lure Company | Montrose | MO | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| SEShreves Engine Rebuilders | Saint Louis | MO | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| SISibley Industries INC | Anderson | MO | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| SRSiegel Robert Plating-siegel Robert Plating | St. Louis | MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| SASigma Aldrich Chemical Company | St Louis | MO | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SASigma Aldrich CO | St Louis | MO | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SCSigma Chemical (tissue Culture) | Saint Louis | MO | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SPSilvanus Products and Serving INC. | Ste Genevieve | MO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SFSimmons Foods Jane Hatchery | Pineville | MO | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| SRSinclair & Rush | Kirkwood | MO | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| SKS & K Industries INC - Bldg #2 | Lexington | MO | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| SASmasal Aggregates & Asphalt, LLC | Cole Camp | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SFSmith Flooring INC | Winona | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| SSSmurfit Stone Container CORP | Chesterfield | MO | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| SESnyder Equipment a Division of New York Air Brake LLC | Springfield | MO | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
| SOSola Optical USA Incorporated | Eldon | MO | Miscellaneous Manufacturing339110 | — | ◇ UNVERIFIED |
| SISolutia Inc-john F Queeny Plant | St. Louis | MO | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| SCSoutheast Coop Service CO | Morehouse | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| SGSouthern Graphic Systems INC | Saint Louis | MO | Printing and Related Support Activities323122 | — | ◇ UNVERIFIED |
| SMSouthern Metal Processing | St. Louis | MO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| SVSouth Valley Mfg | Springfield | MO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SPSpartech Plastic | Cape Girardeau | MO | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| SASpecialloy Acquisition Company | New Madrid | MO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SLSpencer Lumber LLC | Salem | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| SHSpencer's Hwy 53 Ready Mix | Poplar Bluff | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SASpirit Asphalt INC - Hazelwood | Hazelwood | MO | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
