| CCCalsonic Climate Control Incorporated | Irvine | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| CUCanon USA INC | Irvine | CA | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| CUCanon USA INC | Irvine | CA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| CICartel Industries LLC | Irvine | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| CPCatalina Pacific Concrete CO Irvine Plant | Irvine | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CICellese INC | Irvine | CA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| CICellese INC | Irvine | CA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| CICeradyne INC | Irvine | CA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| CPCereus Product Development, INC. | Irvine | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CCChase Cleaners INC | Irvine | CA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| CECheck Engineering & Stamping | Irvine | CA | Fabricated Metal Product Manufacturing332214 | — | ◇ UNVERIFIED |
| CCChocxo Chocolatier LLC | Irvine | CA | Food Manufacturing311351 | — | ◇ UNVERIFIED |
| CIChromadex INC | Irvine | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| CPChromatic Productions INC Dba Chromatic Labels | Irvine | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| COCity of Irvine | Irvine | CA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CFClassic Foods International CORP | Irvine | CA | Food Manufacturing311911 | — | ◇ UNVERIFIED |
| CIClearflow, INC | Irvine | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CClemensdm | Irvine | CA | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| CIClindatrix INC | Irvine | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| CVClover Visual Communications | Irvine | CA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| CCColony Club Hoa | Irvine | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CCCommons Coffee LLC | Irvine | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CGComplete Grinding Solutions LLC | Irvine | CA | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| CMCooper Microelectronics INC | Irvine | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| CBCountryside Baking INC a Dawn Food Products CO | Irvine | CA | Food Manufacturing311813 | — | ◇ UNVERIFIED |
| CTCrystal Tips Holdings | Irvine | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| CCCtc Cable Corporation | Irvine | CA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| CGCtc Global CORP | Irvine | CA | Paper Manufacturing322219 | — | ◇ UNVERIFIED |
| CGCtc Global Corporation | Irvine | CA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| DIDaz, INC. | Irvine | CA | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| DIDaz INC Dba Duramar Interior Surfaces | Irvine | CA | Paper Manufacturing322299 | — | ◇ UNVERIFIED |
| DDazpak | Irvine | CA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
 Del Mar Avionics | Irvine | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| DDiskfactory | Irvine | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| DIDisplayit INC | Irvine | CA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| DLDomadios LLC | Irvine | CA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| DTDouble T Enterprises LLC | Irvine | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| DTDzyne Technologies | Irvine | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| DTDzyne Technologies | Irvine | CA | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ELEco Lumens | Irvine | CA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
 Edwards Lifesciences LLC | Irvine | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| EMElectrolurgy Manufacturing INC | Irvine | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| EIEncore Interiors INC | Irvine | CA | Transportation Equipment Manufacturing336360 | — | ◇ UNVERIFIED |
| ECEnevate Corporation | Irvine | CA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| ECEnevate Corporation | Irvine | CA | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
| ESEnzo Supplies INC | Irvine | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| EUEsino USA Corporation | Irvine | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| EBEsthetics By Design, LLC | Irvine | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| ESEugenix Systems INC | Irvine | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| EIEuro-customs INC | Irvine | CA | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
