| PTPacific Tek | Anaheim | — | ◇ UNVERIFIED |
| PIPacseal INC | Brea | — | ◇ UNVERIFIED |
| PEPair Eyewear | Irvine | — | ◇ UNVERIFIED |
| PMPalisade Metalcraft INC | Costa Mesa | — | ◇ UNVERIFIED |
| PAParking Automation Systems INC | Anaheim | — | ◇ UNVERIFIED |
| PCParks Crane Service | Orange | — | ◇ UNVERIFIED |
| PPentair | Costa Mesa | — | ◇ UNVERIFIED |
| PLPinnacle Landscape Management INC | Santa Ana | — | ◇ UNVERIFIED |
| PTPower Trim CO | La Palma | — | ◇ UNVERIFIED |
| PCPrecision Cutting Tools LLC | La Palma | — | ◇ UNVERIFIED |
| PPPrecision Product Development LLC | Yorba Linda | — | ◇ UNVERIFIED |
| PSPrepress Supply INC | Fountain Valley | — | ◇ UNVERIFIED |
| PAPrint and Finishing Solutions | Placentia | — | ◇ UNVERIFIED |
| PAPvp Advanced Eo Systems INC | Tustin | — | ◇ UNVERIFIED |
| POPyramid Optical Corporation | Garden Grove | — | ◇ UNVERIFIED |
| QCQmc Cranes LLC | Fountain Valley | — | ◇ UNVERIFIED |
| QCQuality Cylinder Head Specialists INC | Stanton | — | ◇ UNVERIFIED |
| QTQuick Turn Machine | Santa Ana | — | ◇ UNVERIFIED |
| QMQuik Manufacturing CO | Fountain Valley | — | ◇ UNVERIFIED |
| RWRayne Water Conditioning | Fullerton | — | ◇ UNVERIFIED |
| RLRbc Lubron Bearing Systems, INC | Fountain Valley | — | ◇ UNVERIFIED |
| RIRed.com INC Dba Red Digital Cinema Camera Company | Irvine | — | ◇ UNVERIFIED |
| RBRegal Beloit Corporation Electra Gear | Anaheim | — | ◇ UNVERIFIED |
| RARemington at Ladera Ranch | Ladera Ranch | — | ◇ UNVERIFIED |
| RGResearch Group Three INC | Anaheim | — | ◇ UNVERIFIED |
| REReuland Electric CO | Brea | — | ◇ UNVERIFIED |
| RDRickelle Dickerson | Garden Grove | — | ◇ UNVERIFIED |
| RERicoh Electronics INC | Tustin | — | ◇ UNVERIFIED |
| RLRinzler Labs LLC | Los Alamitos | — | ◇ UNVERIFIED |
| RRRonin Revolution Corporation | Placentia | — | ◇ UNVERIFIED |
| RRRonin Revolution Corporation | Yorba Linda | — | ◇ UNVERIFIED |
 Rosemount Inc/varec Div | Cypress | — | ◇ UNVERIFIED |
| RCRoto-die Company INC | Anaheim | — | ◇ UNVERIFIED |
| RMR&r Metals Services | Santa Ana | — | ◇ UNVERIFIED |
| SASalih Alicajic Dba Quick Turn Machine | Anaheim | — | ◇ UNVERIFIED |
| SCSand Canyon Business Center | Irvine | — | ◇ UNVERIFIED |
| SVSantiago Villas | Santa Ana | — | ◇ UNVERIFIED |
| SPSantos Precision INC | Santa Ana | — | ◇ UNVERIFIED |
| SESchindler Elevator | San Clemente | — | ◇ UNVERIFIED |
| SESchindler Elevator CORP | Costa Mesa | — | ◇ UNVERIFIED |
| SPSchlumberger Pail Storage at Synertech Pm INC Facility | Garden Grove | — | ◇ UNVERIFIED |
| SMSchorr Metals INC | Placentia | — | ◇ UNVERIFIED |
 Scuderia Rare Parts Srp | Costa Mesa | — | ◇ UNVERIFIED |
| SSSetco Sales Company | Huntington Beach | — | ◇ UNVERIFIED |
| SCSev - Cal Tool INC. | Santa Ana | — | ◇ UNVERIFIED |
| SMSK Media, Inc. | La Palma | — | ◇ UNVERIFIED |
| SASkytower Aviation Services, INC. | Santa Ana | — | ◇ UNVERIFIED |
| SSSolid Solutions Manufacturing INC | Huntington Beach | — | ◇ UNVERIFIED |
| SCSouth Coast Plaza | Costa Mesa | — | ◇ UNVERIFIED |
| SCSouth County Air Services INC. | Irvine | — | ◇ UNVERIFIED |
