| ARAbrasive Recycling Systems | Houston | TX | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| APAccelerated Production Systems, INC. | Houston | TX | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| AMAccent Marble Co., INC. | Houston | TX | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| AMAccuturn Manufacturing | Houston | TX | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| ALAcme Ladders | Houston | TX | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| ALAdmp, LLC | Houston | TX | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| AIAdpower, INC. | Houston | TX | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| AGAdvanced Glassworks LLC | Houston | TX | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| AMAdvanced Milling Concepts, INC. | Houston | TX | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| APAdvanced Powder Solutions | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ALAdvantage Lighting Solutions | Houston | TX | Electrical Equipment, Appliance & Component Manufacturing335132 | — | ◇ UNVERIFIED |
| AGAegis Garment | Houston | TX | Apparel Manufacturing315250 | — | ◇ UNVERIFIED |
| AEAfglobal Emmett Road | Houston | TX | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| AGA Gardner Denver Product | Houston | TX | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| ACAir Curtain Incinerator | Houston | TX | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| AIAirtek International | Houston | TX | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| AMAkers Metal Polishing Plating & Repair | Houston | TX | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ASAker Solutions | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| ATAlco Tool, INC. | Houston | TX | Machinery Manufacturing333512 | — | ◇ UNVERIFIED |
| ACAlcris Construction LLC | Houston | TX | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| ABAldine Bender Ready Mix Plant | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ALAlfa Laval Houston | Houston | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| ALAlfa Laval, INC. | Houston | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| AOAlief Oil Recyclers | Houston | TX | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| AGAllen Group INC - Magnum Manufacturingfg CO Div - Suite 102 | Houston | TX | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| AGAlliance Graphics & Printing | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AAAllied Alloys | Houston | TX | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| AAAllied Alloys LLC | Houston | TX | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| ASAlloy & Stainless Fasteners | Houston | TX | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ASAll-rite Sheet Metal, INC. | Houston | TX | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| AFAllspec Fasteners Incorporated | Houston | TX | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| AHAlmeda Houston Property LLC | Houston | TX | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| AUAlphagraphics US633 | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AMAlpha Mar-imw CO. | Houston | TX | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
 Alpha Plastics, INC. | Houston | TX | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| AHAltivia Haden Road Complex | Houston | TX | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| AEAMBO Est, LLC | Houston | TX | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| ABAmerican Block Company | Houston | TX | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| ABAmerican Builders & Contractors Supply Co., INC | Houston | TX | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
 American Cast Iron Pipe CO. | Houston | TX | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ARAmerican Roller Company, LLC | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| ASAmerican Sheet Metal | Houston | TX | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| ASAmerican Supply & Services of Houston INC | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| AWAmerican Window Manufacturing LLC | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| ADAmeritek Design, INC. | Houston | TX | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| AGAmf Gs Corporation | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| AGAmr Garage Doors & Gates | Houston | TX | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| AIAnchor Industrial Services, LLC | Houston | TX | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| AIAncortex, INC. | Houston | TX | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| AFAndrews Fabrication, INC. | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
