| QQuality | Saint Louis | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RRbpm | Saint Louis | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| RRRebhan R&W Meat Co. Inc. | St. Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| RRReed Rubber Products | Saint Louis | MO | Plastics and Rubber Products Manufacturing326291 | 20-99 | ◐ LIKELY ACTIVE |
| RBReliable Biopharmaceutical Corp. | Saint Louis | MO | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| SOSalumeria Oldani, LLC | St Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SLSan Luigi Spirits LLC | St. Louis | MO | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SMSchnuck Markets, Inc. SLNP | St. Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SSemco | Saint Louis | MO | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| SBShared Brewing LLC | St. Louis | MO | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SCSika Corporation | Saint Louis | MO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| STSimply Thick LLC | St. Louis | MO | Food Manufacturing311999 | — | ◐ LIKELY ACTIVE |
| SISinzenard International Foods | St. Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SBSl Bear Truss St. Louis | Saint Louis | MI | Wood Product Manufacturing321215 | 20-99 | ◐ LIKELY ACTIVE |
| SISoulard Island Spirits | St. Louis | MO | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SISpartech Innovations Center | Saint Louis | MO | Plastics and Rubber Products Manufacturing326113 | 100-499 | ◐ LIKELY ACTIVE |
| SPStar Packing Co., Inc. | St Louis | MO | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| SEStatco-DSI Engineering Systems - St. Louis | Saint Louis | MO | Fabricated Metal Product Manufacturing332996 | 20-99 | ◐ LIKELY ACTIVE |
| SBSTL Broadway | Saint Louis | MO | Chemical Manufacturing325414 | 100-499 | ◐ LIKELY ACTIVE |
| SCSTL Cherokee | Saint Louis | MO | Chemical Manufacturing325199 | 500+ | ◐ LIKELY ACTIVE |
| SDSTL Dekalb | Saint Louis | MO | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| SESTL Ewing | Saint Louis | MO | Chemical Manufacturing325199 | 100-499 | ◐ LIKELY ACTIVE |
| SLSt Louis | Saint Louis | MO | Miscellaneous Manufacturing339116 | 20-99 | ◐ LIKELY ACTIVE |
| SLSt. Louis | Saint Louis | MO | Printing and Related Support Activities323120 | 100-499 | ◐ LIKELY ACTIVE |
| SLSt. Louis Branch | Saint Louis | MO | Machinery Manufacturing333995 | 1-19 | ◐ LIKELY ACTIVE |
| SLSt. Louis Brewery | Saint Louis | MO | Beverage and Tobacco Product Manufacturing312120 | 500+ | ◐ LIKELY ACTIVE |
| SLSt Louis Flour Mill | Saint Louis | MO | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| SLSt. Louis, MO | Saint Louis | MO | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| SLSt. Louis, MO - 469 | Saint Louis | MO | Wood Product Manufacturing321920 | 20-99 | ◐ LIKELY ACTIVE |
| SLSt Louis Mo One Union 70 | Saint Louis | MO | Beverage and Tobacco Product Manufacturing312111 | 100-499 | ◐ LIKELY ACTIVE |
| SLSt Louis Sov | Saint Louis | MO | Miscellaneous Manufacturing339112 | 20-99 | ◐ LIKELY ACTIVE |
| SLSt Louis Tree | Saint Louis | MO | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
| SSSTL Spruce | Saint Louis | MO | Chemical Manufacturing325199 | 500+ | ◐ LIKELY ACTIVE |
| SSunnen | Saint Louis | MO | Transportation Equipment Manufacturing336411 | 100-499 | ◐ LIKELY ACTIVE |
| SSSwitchgrass Spirits | St. Louis | MO | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| SISwitzer Industris | Saint Louis | MO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TTgc-stl | Saint Louis | MO | Electrical Equipment, Appliance & Component Manufacturing335999 | 20-99 | ◐ LIKELY ACTIVE |
| TFThe Fountain on Locust, INC. | St Louis | MO | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
The Home City Ice Company St. Louis | Saint Louis | MO | Beverage and Tobacco Product Manufacturing312113 | 1-19 | ◐ LIKELY ACTIVE |
| TSThe Saint Louis Brewery, LLC | St. Louis | MO | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TSThe Saint Louis Brewery, LLC | St. Louis | MO | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TPTj's Pizza Company | St. Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| TITranschemical Incorporated | St. Louis | MO | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| TTre | Saint Louis | MO | Food Manufacturing311612 | 100-499 | ◐ LIKELY ACTIVE |
| TMTriad Manufacturing, Inc. | Saint Louis | MO | Furniture and Related Product Manufacturing337215 | 100-499 | ◐ LIKELY ACTIVE |
| UFUnited Fruit and Produce Co. | St. Louis | MO | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| UFUnited Fruit and Produce Co. | St. Louis | MO | Food Manufacturing311615 | — | ◐ LIKELY ACTIVE |
| UUno | Saint Louis | MO | Food Manufacturing311612 | 1-19 | ◐ LIKELY ACTIVE |
| UCUrban Chestnut Brewing Company | St. Louis | MO | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| UPU.S. Paint Corporation | Saint Louis | MO | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |