| PIPACCAR Information Technology Division | Renton | 100–499 | ◐ LIKELY ACTIVE |
| PPPACCAR Parts Division Office | Renton | 500+ | ◐ LIKELY ACTIVE |
| PMPacific Marine Inspections LLC | Lake Forest Park | — | ◐ LIKELY ACTIVE |
| PNPegasus Northwest Inc | Kent | 20–99 | ◐ LIKELY ACTIVE |
| PIpioneer industries | Seattle | 20–99 | ◐ LIKELY ACTIVE |
| PMPower's Marine Company LLC | Seattle | — | ◐ LIKELY ACTIVE |
| PSPropulsion Systems, INC. | Seattle | — | ◐ LIKELY ACTIVE |
| RWRenton, WA (WA016) | Renton | 500+ | ◐ LIKELY ACTIVE |
| SSeattle | Auburn | 100–499 | ◐ LIKELY ACTIVE |
| SASkookum Aerospace | Kent | 20–99 | ◐ LIKELY ACTIVE |
| SASNA - Auburn | Auburn | 20–99 | ◐ LIKELY ACTIVE |
| TSTelum Space Technologies, INC | Kirkland | — | ◐ LIKELY ACTIVE |
| TNThermal Northwest INC. | Kent | — | ◐ LIKELY ACTIVE |
 Vigor Marine Seattle | Seattle | 100–499 | ◐ LIKELY ACTIVE |
| UTUdm Technologies INC. | North Bend | — | ◐ LIKELY ACTIVE |
| WCWa317936222 - Csr Marine INC | Seattle | — | ◇ UNVERIFIED |
| AUAccelleron US INC Kent | Kent | — | ◇ UNVERIFIED |
| AAAim Aerospace | Auburn | — | ◇ UNVERIFIED |
| ABAllied Body Works Inc | Seattle | — | ◇ UNVERIFIED |
| ALAltRider, LLC | Seattle | — | ◇ UNVERIFIED |
| A5Avenue 55 Blue Origin | Kent | — | ◇ UNVERIFIED |
| BTBeall Trailers of Wa INC | Kent | — | ◇ UNVERIFIED |
| BWBert Well Industries Site | Kent | — | ◇ UNVERIFIED |
| BOBlue Origin LLC | Seattle | — | ◇ UNVERIFIED |
| BOBlue Origin LLC 20073 72nd Ave S Kent | Kent | — | ◇ UNVERIFIED |
| BOBlue Origin Manufacturing LLC Hopper | Kent | — | ◇ UNVERIFIED |
| BFB&m Fisheries | Seattle | — | ◇ UNVERIFIED |
| BBBoeing Building Site | Seattle | — | ◇ UNVERIFIED |
| BCBoeing Commercial Airplane Renton | Renton | — | ◇ UNVERIFIED |
| BCBoeing Commercial Airplane Seattle | Seattle | — | ◇ UNVERIFIED |
| BCBoeing Company the | Auburn | — | ◇ UNVERIFIED |
| DSDaa Seattle | Auburn | — | ◇ UNVERIFIED |
| DMDuroboat Mfg CO INC | Seattle | — | ◇ UNVERIFIED |
| EWEast West Seafood's, LLC | Seattle | — | ◇ UNVERIFIED |
| EMExotic Metals Forming Division | Kent | — | ◇ UNVERIFIED |
| FMFluid Motion LLC | Auburn | — | ◇ UNVERIFIED |
| GDGeneral Dynamics Ots INC Bothell | Bothell | — | ◇ UNVERIFIED |
| KCKarma Coating | Seattle | — | ◇ UNVERIFIED |
| LULake Union Yacht Center | Seattle | — | ◇ UNVERIFIED |
| LBLisa Building LLC | Auburn | — | ◇ UNVERIFIED |
| LALmi Aerospace INC | Auburn | — | ◇ UNVERIFIED |
| MCMorrie's Cycle Shop, Inc. | Auburn | — | ◇ UNVERIFIED |
| MSMt. Si Cycles LLC | Snoqualmie | — | ◇ UNVERIFIED |
| NANorthwest Automatics | Kent | — | ◇ UNVERIFIED |
| PAPremier Autobody Specialists | Seattle | — | ◇ UNVERIFIED |
| RPRenton Plant | Renton | — | ◇ UNVERIFIED |
| SCSnow & Company INC | Seattle | — | ◇ UNVERIFIED |
| SPSound Propeller Services INC | Seattle | — | ◇ UNVERIFIED |
| SESpace Exploration Technologies Corporation | Redmond | — | ◇ UNVERIFIED |
| SCSpectralux Corporation | Redmond | — | ◇ UNVERIFIED |
