| TGTaylor Graphics | Irvine | CA | Printing and Related Support Activities323111 | 20-99 | ◇ UNVERIFIED |
| TThermaprintcorporation | Irvine | CA | Printing and Related Support Activities323113 | 1-19 | ◇ UNVERIFIED |
| 2H2040 Holdings, LLC | Irvine | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
 3 Day Blinds Corporation | Irvine | CA | Furniture and Related Product Manufacturing337920 | — | ◇ UNVERIFIED |
| 3C3m Ceradyne INC a 3m Company | Irvine | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| 9P9 Pasteur | Irvine | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ANAbenmary Novel Enterprises INC. | Irvine | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| ASAb Sciex, LLC | Irvine | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| ATAbstrax Tech INC | Irvine | CA | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| AIAcclarent INC | Irvine | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| AIAcufocus INC | Irvine | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| ABAdvanced Biocatalytics | Irvine | CA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| AGAguinaga Green INC | Irvine | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| ADAlbertsons Distribution Center | Irvine | CA | Food Manufacturing311411 | — | ◇ UNVERIFIED |
| ASAlcon Surgical INC | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AMAllergan Medical Optics | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ALAllison Lie | Irvine | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| AOAmber Ornamental Iron | Irvine | CA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| ASAmetek Spectro Analytical Instruments INC | Irvine | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| AAmpronix | Irvine | CA | Computer and Electronic Product Manufacturing334118 | — | ◇ UNVERIFIED |
| ADAncerre Designs | Irvine | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| APAnchen Pharmaceuticals, INC | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| APAnchen Pharmaceuticals, INC. | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AMApi Mfg Facility Bausch Health Care | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AAArchytas Automation INC | Irvine | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| AIArdess International INC. | Irvine | CA | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| AIArnabal International | Irvine | CA | Plastics and Rubber Products Manufacturing326220 | — | ◇ UNVERIFIED |
| ALArtidental Lab INC | Irvine | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| ATAstronics Test Systems | Irvine | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ACAtlas Copco Compressors- Irvine | Irvine | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
| APAvon Protection Ceradyne | Irvine | CA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| ABAvrio Biopharmaceuticals, LLC | Irvine | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AMAxonics Modulation Technologies INC | Irvine | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| BIBard (senorx Inc) | Irvine | CA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| BABausch and Lomb Americas INC. | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BPBenning Power Electronics INC | Irvine | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| BCBertea CORP Logistics Div | Irvine | CA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| BBBeta Bionics | Irvine | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| BCBig Cart Corporation | Irvine | CA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
 Biocare Medical INC | Irvine | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| BLBiorad Laboratories | Irvine | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| BIBioscrip Infusion Services INC | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BWBiosense Webster | Irvine | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BIBiosensors International Innovation Center | Irvine | CA | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| BMBotanica Medella LLC | Irvine | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| BCBroadcom Corporatioin | Irvine | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| BCBroadcom Corporation | Irvine | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| BCBroadley-james CORP. | Irvine | CA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| BBroadley-James-Corporation | Irvine | CA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| B3Building 35 | Irvine | CA | Machinery Manufacturing333314 | — | ◇ UNVERIFIED |
