| ASAmeron Steel Fabrication Division | Fontana | CA | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| AFA.m Finishing INC | Anaheim | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| ATAmg Torrance LLC | Torrance | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| AAAmpine: a Division of Timber Products CO | Martell | CA | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| AEAnaheim Extrusion CO | Anaheim | CA | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
| ADAnalog Devices Sunnyvale Site | Sunnyvale | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| APAnchor Printing | Tustin | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| ALAnderson Lithograph Company | Los Angeles | CA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| APAnderson Printing | Los Angeles | CA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ALAndrew Lauren Surfaces | Santa Fe Springs | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| APAndrop Packaging INC | Ontario | CA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| AWAnemostat West a Mestek CO | Carson | CA | Machinery Manufacturing333412 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Sun Valley | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block CO INC | Fontana | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| ABAngelus Block Company | Oxnard | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| AMAngelus Metal Finshng and Polishng Company Incorporated | Los Angeles | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| APAngelus Precision Grinding | South Gate | CA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| ASAngelus Sanitary Can Machine CO | Los Angeles | CA | Machinery Manufacturing333513 | — | ◇ UNVERIFIED |
| AIAnnieglass INC | Watsonville | CA | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| AIAnodizing Industries Nadcap Facility | Los Angeles | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AMAno-tech Metal Finishing | Clovis | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AWAnson Woodworking INC | Pomona | CA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| AIAnthony, INC. | San Fernando | CA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| AMApex Metal Polishing CO | Culver City | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ASApex Solutions | Oakland | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AIApple, INC | Cupertino | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| AIApple INC (newark 3) | Newark | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| AIApple INC. (ur01) | Sunnyvale | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| AAApplied Anodize INC | San Jose | CA | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
 Applied Biosystems INC | Foster City | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
 Applied Biosystems, LLC | Foster City | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| AGApplied Graphics Technologies | Los Angeles | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AMApplied Micro Circuits CORP | San Diego | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ASApplied Silicone Corportation | Santa Paula | CA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| ACAptos Corporation | Milpitas | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| AEApw Enclosure Systems | Anaheim | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| ACAqua-con Company | Santa Ana | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
| ACAquafine CORP | Valencia | CA | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| ACAquapulse Chemicals, LLC | Oxnard | CA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| AIAquasea INC | Rancho Dominguez | CA | Apparel Manufacturing315992 | 20-99 | ◇ UNVERIFIED |
| AAAra Automated Finishing | Sunnyvale | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIArcadia INC | Vernon | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| AGArctic Glacier Vernon, INC. | Los Angeles | CA | Beverage and Tobacco Product Manufacturing312113 | — | ◇ UNVERIFIED |
| AIArcturus INC. | Oxnard | CA | Transportation Equipment Manufacturing336399 | 1-19 | ◇ UNVERIFIED |
| ABArcus Biosciences | Hayward | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ALArdex LP | Stockton | CA | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| AMArgent Materials | Oakland | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AIArgil INC | Santa Clara | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| AGAriza Global Foods INC | Paramount | CA | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| AAArlon Adhesive System/decorative Films | Santa Ana | CA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
