| SPService Pump & Supply | Danville | WV | Machinery Manufacturing333914 | — | ◇ UNVERIFIED |
| SPService Pump & Supply CO | Huntington | WV | Fabricated Metal Product Manufacturing332913 | — | ◇ UNVERIFIED |
| SWSetzer's World of Camping | Huntington | WV | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| SSherwin-williams #701960 | Oak Hill | WV | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SMSignode Metals Group | Weirton | WV | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SWSimonton Windows | Ellenboro | WV | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| SWSimonton Windows | Pennsboro | WV | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| SWSimonton Windows | Pennsboro | WV | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| SESions Equipment CO INC | Moorefield | WV | Machinery Manufacturing333618 | — | ◇ UNVERIFIED |
| SSSir Speedy | Parkersburg | WV | Printing and Related Support Activities323120 | — | ◇ UNVERIFIED |
| SGSloan Glass INC | Culloden | WV | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SSSmith Services - a Timken Brand | Princeton | WV | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| SSofie | Morgantown | WV | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SLSolenis LLC | Stanaford | WV | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SESoles Electric of Huntington, INC. | Huntington | WV | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| SASolutia-ops at Flexsys Nitro | Nitro | WV | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
 Southern Fabricators INC | Fayetteville | WV | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| SSSouthern Steel Products CO | Clarksburg | WV | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Huntington | Huntington | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Inc., Plant #52 Alta | Alta | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SWSouthern West Virginia Asphalt, Princeton/plant # | Princeton | WV | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SGSpecialty Groups INC Shop | Lost Creek | WV | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC | Institute | WV | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC - Glutaraldehyde Plant | Institute | WV | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SVSpencer Veneer, Llc, Spencer | Spencer | WV | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| SSSpirit Services of Wv LLC | Bruceton Mills | WV | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| SHStandard Hydraulics | Craigsville | WV | Machinery Manufacturing333996 | — | ◇ UNVERIFIED |
| SIStarvaggi Ind. | Weirton | WV | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCStella-jones Corporation | Reedy | WV | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| SMSt. Mary's Refinery CO. | St. Marys | WV | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| SRSturm Rapid Response Center | Barboursville | WV | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| STS & T Welding CO INC | Pineville | WV | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| TMTalon Manufacturing Company, INC. | Herndon | WV | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| TMTalon Manufacturing Company, INC. Plant7 | Alpoca | WV | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| TAT and N Electric Motor Exchange INC. | Bluefield | WV | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| TITeam Industrial Services INC | Huntington | WV | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| TUTerex Utilities INC Dba Terex Services | Charleston | WV | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| TCTetra Chemicals | Parkersburg | WV | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| TJThe Jim C. Hamer Company, Marlinton | Marlinton | WV | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| TPThistle Processing LLC | Huntington | WV | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| TMTimken Motor & Crane Ser, LLC (dba Smith Services) | Princeton | WV | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| TTTire Track INC | Vienna | WV | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
| TBTop Brand Manufacturing | Mannington | WV | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| TTramco | Chattaroy | WV | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| TSTramco Services, Inc., Williamson | Chattaroy | WV | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| TDTransgas Development Systems, Llc, Wharncliffe | Wharncliffe | WV | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| TTTravel Trailer Center INC | Parkersburg | WV | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| TSTriple S CORP | Beckley | WV | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| TPTri-state Plating | Huntington | WV | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TPTri-state Plating and Polishing, Inc., Huntington | Huntington | WV | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
