| SBSeattle Biodiesel LLC | Seattle | WA | Food Manufacturing311225 | 20-99 | ◇ UNVERIFIED |
| SESkyline Electric and Mfg CO INC | Seattle | WA | Electrical Equipment, Appliance & Component Manufacturing335999 | 1-19 | ◇ UNVERIFIED |
| SPSpecialty Products | Lakewood | WA | Chemical Manufacturing325211 | 20-99 | ◇ UNVERIFIED |
| SYStabbert Yacht and Ship LLC | Seattle | WA | Transportation Equipment Manufacturing336611 | 20-99 | ◇ UNVERIFIED |
| SBSwanson Bark and Wood Products | Longview | WA | Wood Product Manufacturing321999 | 100-499 | ◇ UNVERIFIED |
| TThermaline | Auburn | WA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| TSThermoforming Systems LLC | Union Gap | WA | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| TEToku E CO | Bellingham | WA | Beverage and Tobacco Product Manufacturing312140 | 1-19 | ◇ UNVERIFIED |
| TDTru Door INC | Pasco | WA | Wood Product Manufacturing321911 | 1-19 | ◇ UNVERIFIED |
| UWUnitized West | Chehalis | WA | Primary Metal Manufacturing331513 | 20-99 | ◇ UNVERIFIED |
| WGWashington Graphics | Redmond | WA | Printing and Related Support Activities323113 | 1-19 | ◇ UNVERIFIED |
| WPWholesale Printers INC | Battle Ground | WA | Printing and Related Support Activities323110 | 1-19 | ◇ UNVERIFIED |
| 5U51 University Building | Seattle | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| 8E8801 E Marginal Way S | Tukwila | WA | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| 9I999 INC | Pasco | WA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| AAA and J Custom Cabinets INC | Vancouver | WA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| ABA & B Asphalt Benton City Cedar Rapids | Benton City | WA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ACAbitibi Consolidated Site | Steilacoom | WA | Paper Manufacturing322122 | — | ◇ UNVERIFIED |
| ABAccess Business Group LLC Quincy | Quincy | WA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AMAccra Manufacturing | Bothell | WA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
 Accurate Industries | Auburn | WA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| APAce Paving CO INC Johns Prairie Pit | Shelton | WA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| APAce Paving Schilinger Pit Plant 4 | Belfair | WA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AMAcro Machining | Marysville | WA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◇ UNVERIFIED |
| ALAcu Line CORP Mukilteo | Mukilteo | WA | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| AMAdmiral Marine Works Site | Port Angeles | WA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
 Advanced Drainage Systems INC | Washougal | WA | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| ACAero Controls Incorporated | Shelton | WA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| AAeroform | Arlington | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| ALAero Lac INC | Seattle | WA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
 Aero Precision Commerce | Tacoma | WA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| Aero Precision Lakewood | Lakewood | WA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| ACAerostructures CORP the | Everett | WA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| ATAgilent Technologies Site | Liberty Lake | WA | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| AAAim Aerospace 1517 Building | Auburn | WA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| AAAim Aviation Auburn INC W Valley | Auburn | WA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| AGAirco Gases Div of Boc Seattle | Seattle | WA | Machinery Manufacturing333912 | — | ◇ UNVERIFIED |
| ACAirgas Carbonic INC Sip | Spokane | WA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| APAir Products Manufacturing CORP | Puyallup | WA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ACAlaskan Copper & Brass CO Ctl | Seattle | WA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| AJAlbert Jensen and Sons INC | Friday Harbor | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| AAAlbina Asphalt CO T2 | Vancouver | WA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AYAleutian Yachts | Tacoma | WA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| ACAll Custom Metal Arts | Seattle | WA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AAllflight | Kent | WA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| AMAlliance Machine Systems International L | Spokane | WA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ATAlloy Trailers Site | Spokane | WA | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| APAll Pak Container | Renton | WA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ACAllpak Containers | Cheney | WA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ACAlpac CORP | Seattle | WA | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
