| SPSeattle Port Maritime Industrial Cent | Seattle | WA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| SESeaview East Boatyard | Seattle | WA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| SSSeven Seas Fishing CO | Seattle | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| SISkills INC Paint | Seattle | WA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SESkyline Electric and Mfg CO INC | Seattle | WA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| SISnyder Industries INC | Seattle | WA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SPSouth Park Marina | Seattle | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| SISpencer Industries INC | Seattle | WA | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| SYStabbert Yacht and Ship LLC | Seattle | WA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SSSummit Supply | Seattle | WA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| TSTrim Systems Site | Seattle | WA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TNTrue North Apartment Building | Seattle | WA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
Universal Printing | Seattle | WA | Printing and Related Support Activities323112 | — | ◇ UNVERIFIED |
| VNVaupell Northwest Molding | Seattle | WA | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| VMViox Mcdowell Site | Seattle | WA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| WGWescor Graphics CORP | Seattle | WA | Printing and Related Support Activities323120 | — | ◇ UNVERIFIED |
| WCWesmar Company Site | Seattle | WA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| WSWestern Steel Casting CO | Seattle | WA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| WFWestway Feed Products CO INC | Seattle | WA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| WCWycoff CO West Seattle | Seattle | WA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| YMYachtfish Marine | Seattle | WA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| YPYacht Performance Center | Seattle | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| ZZymogenetics | Seattle | WA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| 2P206 Printing LLC | Seattle | WA | Printing and Related Support Activities323113 | — | ◐ LIKELY ACTIVE |
| 5W509 Wine Company | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AVAlphabet Vodka | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| AMAmbrosia Meadery | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AAnimale | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| AFArctic Fjord, Inc. | Seattle | WA | Food Manufacturing311710 | 100-499 | ◐ LIKELY ACTIVE |
| ATAt the Ready, LLC | Seattle | WA | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| BSBallard Spirits LLC | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BMBardahl Manufacturing Corporation | Seattle | WA | Petroleum and Coal Products Manufacturing324191 | 20-99 | ◐ LIKELY ACTIVE |
| BSBastian Solutions Northwest | Seattle | WA | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| BSBenson Spirits LLC | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BMBetter Meat Inc. | Seattle | WA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BBBiltong Beef Products LLC | Seattle | WA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BMBlack Magic Beverages, LLC | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BMBlack Moon Bitters | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BLBolo LLC | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BRBrooks Rand, INC. | Seattle | WA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| CCadence | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCertainTeed | Seattle | WA | Nonmetallic Mineral Product Manufacturing327420 | 100-499 | ◐ LIKELY ACTIVE |
| CMChannel Marker Cider | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCChatter Creek | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCChukar Cherries (Pike) | Seattle | WA | Food Manufacturing311423 | 1-19 | ◐ LIKELY ACTIVE |
| CCCloudlift Cellars | Seattle | WA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CRCoastal Repair Group LLC | Seattle | WA | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| CMCoho Marine | Seattle | WA | Miscellaneous Manufacturing339991 | — | ◐ LIKELY ACTIVE |
| CDCopperworks Distilling Company | Seattle | WA | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |