| WIWFI International | Houston | 20–99 | ◐ LIKELY ACTIVE |
| WWWGM Worswick Group MGT | Houston | 1–19 | ◐ LIKELY ACTIVE |
| WSWhirlwind Steel Buildings, Inc. Houston | Houston | 500+ | ◐ LIKELY ACTIVE |
| W6WoodCo - 660 | Houston | 20–99 | ◐ LIKELY ACTIVE |
| WLWwn, Limited | Houston | — | ◐ LIKELY ACTIVE |
| PTProsource Trace-a-matic LLC | Houston | — | ◐ LIKELY ACTIVE |
| TNTj Nad LLC | Houston | — | ◐ LIKELY ACTIVE |
| DMDimensional Machine Works LLC | Houston | — | ◇ UNVERIFIED |
| ESEngy Southwest Container Products | Houston | — | ◇ UNVERIFIED |
| HHHunt & Hunt | Houston | — | ◇ UNVERIFIED |
| MMM&r Manufacturing, LLC | Houston | — | ◇ UNVERIFIED |
| SDSteel Designs, INC. | Houston | — | ◇ UNVERIFIED |
| 1P14703 Partners Holdings LLC | Houston | — | ◇ UNVERIFIED |
| ATAaar Tell Houston | Houston | — | ◇ UNVERIFIED |
| AMAab Mfg. Holdings, L.p. | Houston | — | ◇ UNVERIFIED |
| ABA B Chance Company | Houston | — | ◇ UNVERIFIED |
| ABAbrasive Blast Unit | Houston | — | ◇ UNVERIFIED |
| APAccelerated Production Systems, INC. | Houston | — | ◇ UNVERIFIED |
| ALAcme Ladders | Houston | — | ◇ UNVERIFIED |
| APAdvanced Powder Solutions | Houston | — | ◇ UNVERIFIED |
| AEAfglobal Emmett Road | Houston | — | ◇ UNVERIFIED |
| AMAkers Metal Polishing Plating & Repair | Houston | — | ◇ UNVERIFIED |
| ALAlfa Laval Houston | Houston | — | ◇ UNVERIFIED |
| ALAlfa Laval, INC. | Houston | — | ◇ UNVERIFIED |
| ASAlloy & Stainless Fasteners | Houston | — | ◇ UNVERIFIED |
| ASAll-rite Sheet Metal, INC. | Houston | — | ◇ UNVERIFIED |
| AFAllspec Fasteners Incorporated | Houston | — | ◇ UNVERIFIED |
| ABAmerican Block Company | Houston | — | ◇ UNVERIFIED |
| ABAmerican Builders & Contractors Supply Co., INC | Houston | — | ◇ UNVERIFIED |
| ARAmerican Roller Company, LLC | Houston | — | ◇ UNVERIFIED |
| ASAmerican Sheet Metal | Houston | — | ◇ UNVERIFIED |
| AAmogy | Houston | — | ◇ UNVERIFIED |
| AIAnchor Industrial Services, LLC | Houston | — | ◇ UNVERIFIED |
| AFAndrews Fabrication, INC. | Houston | — | ◇ UNVERIFIED |
| AMArevalo Manufacturing, INC. | Houston | — | ◇ UNVERIFIED |
| ACArray Coating Technology, LLC | Houston | — | ◇ UNVERIFIED |
 Associated Steel Fabricators, INC. | Houston | — | ◇ UNVERIFIED |
| APAtlas Paint | Houston | — | ◇ UNVERIFIED |
| BBB & B Insulation CO INC | Houston | — | ◇ UNVERIFIED |
| BSBest Steel Buildings, INC. | Houston | — | ◇ UNVERIFIED |
| BBBetter Burglar Bars INC. | Houston | — | ◇ UNVERIFIED |
| BSBlue Spruce Investments, LLC (EPC) and Deephole Solutions, Inc. (OC) | Houston | — | ◇ UNVERIFIED |
| BTBodycote Thermal Processing | Houston | — | ◇ UNVERIFIED |
| BTBodycote Thermal Processing - Hays | Houston | — | ◇ UNVERIFIED |
| BCBray Commercial | Houston | — | ◇ UNVERIFIED |
| BSBray Sales Dba Amresist | Houston | — | ◇ UNVERIFIED |
| BMBrw Metal Industries | Houston | — | ◇ UNVERIFIED |
| BMBrw Metal Industries, LLC | Houston | — | ◇ UNVERIFIED |
| BBBurbank Barrel & Drum INC | Houston | — | ◇ UNVERIFIED |
| BGB-w Grinding Services | Houston | — | ◇ UNVERIFIED |
