| CPCascade Pump Company | Santa Fe Springs | — | ◇ UNVERIFIED |
| COCavins Oilwell Tools | Long Beach | — | ◇ UNVERIFIED |
| CDC&c Die Engraving INC. | Santa Fe Springs | — | ◇ UNVERIFIED |
| CFCeleros Flow Technology Clydeunion Pumps | Downey | — | ◇ UNVERIFIED |
| CBCentral Blower CO. | City of Industry | — | ◇ UNVERIFIED |
| CUCertex USA LLC | Wilmington | — | ◇ UNVERIFIED |
| CNCft Nv Developments, LLC | Pasadena | — | ◇ UNVERIFIED |
| CGC G I Sys | Paramount | — | ◇ UNVERIFIED |
| CFChai Five Laundry Services LLC Dba Foasberg Laundry and Dry | Long Beach | — | ◇ UNVERIFIED |
| CPChalmers/wooster Plaza Hoa | Los Angeles | — | ◇ UNVERIFIED |
| CICinestill Inc. | Los Angeles | — | ◇ UNVERIFIED |
| CICircle Industrial Mfg CORP | Compton | — | ◇ UNVERIFIED |
| COCity of El Monte Transportation | El Monte | — | ◇ UNVERIFIED |
| COCity of El Monte Transportation | El Monte | — | ◇ UNVERIFIED |
| COCity of Los Angeles | Los Angeles | — | ◇ UNVERIFIED |
| COCity of Los Angeles | Los Angeles | — | ◇ UNVERIFIED |
| COCity of Los Angeles | Los Angeles | — | ◇ UNVERIFIED |
| COCity of Palmdale | Palmdale | — | ◇ UNVERIFIED |
| COCity of Rosemead | Rosemead | — | ◇ UNVERIFIED |
| CKC. K. Bud Myers Engineering INC | Cudahy | — | ◇ UNVERIFIED |
| CCClassic Cars | Paramount | — | ◇ UNVERIFIED |
| CWClassic Wood Creations INC | Gardena | — | ◇ UNVERIFIED |
 Clayton Manufacturing Company | El Monte | — | ◇ UNVERIFIED |
| CEClean Energy - 10400 Aviation | Los Angeles | — | ◇ UNVERIFIED |
| CLCloverdale Luxury Apartments | Los Angeles | — | ◇ UNVERIFIED |
| CCClub California Maint. CORP. | Los Angeles | — | ◇ UNVERIFIED |
| CMCni Mfg | Irwindale | — | ◇ UNVERIFIED |
| CRCoast Radiator Company | Los Angeles | — | ◇ UNVERIFIED |
| CSCoastside Staffing Group, LLC | Santa Clarita | — | ◇ UNVERIFIED |
| CACoherent Advanced Solutions INC | Monrovia | — | ◇ UNVERIFIED |
| CICoherent INC | Monrovia | — | ◇ UNVERIFIED |
| CSColburn School | Los Angeles | — | ◇ UNVERIFIED |
| CRColdrite Refrigeration and Manufacturing, INC. | Carson | — | ◇ UNVERIFIED |
| CLColdwater LLC | Studio City | — | ◇ UNVERIFIED |
| CACole Apparel | San Fernando | — | ◇ UNVERIFIED |
| CIComco INC | Burbank | — | ◇ UNVERIFIED |
| CGCompass Group USA INC Dba Canteen Vending | Claremont | — | ◇ UNVERIFIED |
| CICompu-aire INC | Whittier | — | ◇ UNVERIFIED |
| CMConcourse Medical Plaza | City of Industry | — | ◇ UNVERIFIED |
 Confab Manufacturing Company LLC | Sun Valley | — | ◇ UNVERIFIED |
| CIConquest Industries INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| CCConsol Controls CORP Plt No 4 | El Segundo | — | ◇ UNVERIFIED |
| CEConsolidated Elevator CO. INC. | San Dimas | — | ◇ UNVERIFIED |
| CEConsolidated Equipment CORP. | Sun Valley | — | ◇ UNVERIFIED |
 Consolidated Laundry Machinery INC. | Pomona | — | ◇ UNVERIFIED |
| CPConsolidated Precision Products | Bell Gardens | — | ◇ UNVERIFIED |
| CSConveyor Service & Electric | Santa Fe Springs | — | ◇ UNVERIFIED |
| CECoordinated Equipment CO | Wilmington | — | ◇ UNVERIFIED |
| CCoretrust | Pasadena | — | ◇ UNVERIFIED |
| CCCorine Carrillo | Azusa | — | ◇ UNVERIFIED |
