| PCParadigm Contract Manufacturing LLC | Garden Grove | — | ◇ UNVERIFIED |
| PLPennyvision LLC Dba Pizza Hut | Santa Ana | — | ◇ UNVERIFIED |
| PDPower Distribution, INC | Santa Ana | — | ◇ UNVERIFIED |
| PEPrecept Environmental INC | Lake Forest | — | ◇ UNVERIFIED |
| POPrecision Offset INC | Irvine | — | ◇ UNVERIFIED |
| PAPremier Auto Service | Stanton | — | ◇ UNVERIFIED |
| PDProgram Data INC | Irvine | — | ◇ UNVERIFIED |
| PPsitech | Fountain Valley | — | ◇ UNVERIFIED |
| QIQcm INC. Dba Veris Mfg. | Brea | — | ◇ UNVERIFIED |
| QIQ-flex INC | Santa Ana | — | ◇ UNVERIFIED |
| QIQualcomm Incorporated | Irvine | — | ◇ UNVERIFIED |
| QDQuest Digital Solutions | Yorba Linda | — | ◇ UNVERIFIED |
| RLRacepak LLC | Rancho Santa Margari | — | ◇ UNVERIFIED |
| RSRaytheon Service CO | Irvine | — | ◇ UNVERIFIED |
| RPRbd Packaging LLC. | Anaheim | — | ◇ UNVERIFIED |
| RHRenkus Heinz | Foothill Ranch | — | ◇ UNVERIFIED |
 Revco Products INC | Huntington Beach | — | ◇ UNVERIFIED |
| RMReverse Medical Corporation | Irvine | — | ◇ UNVERIFIED |
| RHR H Barden Inc, Lodestone Pacific | Anaheim | — | ◇ UNVERIFIED |
| RERicoh Electronics INC | Tustin | — | ◇ UNVERIFIED |
| RSRocker Solenoid Company Dba Rocker Industries | Huntington Beach | — | ◇ UNVERIFIED |
| RIRockwell International Collins | Costa Mesa | — | ◇ UNVERIFIED |
| RDRoi Development CORP | Santa Ana | — | ◇ UNVERIFIED |
| RERotech Engineering, INC. | Placentia | — | ◇ UNVERIFIED |
 Sandisk Technologies INC | Irvine | — | ◇ UNVERIFIED |
| SHSc Health Labs LLC | Irvine | — | ◇ UNVERIFIED |
| SSemicoa | Costa Mesa | — | ◇ UNVERIFIED |
| SSSenra Systems INC | Cypress | — | ◇ UNVERIFIED |
| SDSensor Development INC | Santa Ana | — | ◇ UNVERIFIED |
| SMSequent Medical | Aliso Viejo | — | ◇ UNVERIFIED |
| SISheldahl Inc/orange County 059 | Tustin | — | ◇ UNVERIFIED |
| SAShelly Associates INC | Irvine | — | ◇ UNVERIFIED |
| SShiley | Irvine | — | ◇ UNVERIFIED |
| SSSkyworks Solutions INC | Newport Beach | — | ◇ UNVERIFIED |
| SSSkyworks Solutions INC | Irvine | — | ◇ UNVERIFIED |
| SESmart Electronics | Anaheim | — | ◇ UNVERIFIED |
 Smiths Interconnect Americas INC | Costa Mesa | — | ◇ UNVERIFIED |
| SASocal Aerospace Coatings, LLC | Garden Grove | — | ◇ UNVERIFIED |
| SMSolder Mask INC | Huntington Beach | — | ◇ UNVERIFIED |
| SSSolder Station One INC | Santa Ana | — | ◇ UNVERIFIED |
| SMSoma Magnetics Corporation | Fullerton | — | ◇ UNVERIFIED |
| SCSouth Coast Circuits, Dba Summit Interconnect Santa Ana | Santa Ana | — | ◇ UNVERIFIED |
| SCSouth Coast Circuits INC | Santa Ana | — | ◇ UNVERIFIED |
| SASouthwest Aerospace Corporatio | Tustin | — | ◇ UNVERIFIED |
| SCSpeedy Circuits, Div of Pjc Tech INC | Huntington Beach | — | ◇ UNVERIFIED |
| SJSt. Jude Medical, INC. | Irvine | — | ◇ UNVERIFIED |
| SPSulma Pantoja | Huntington Beach | — | ◇ UNVERIFIED |
| SMSuperior Mfg CO | Santa Ana | — | ◇ UNVERIFIED |
| SASurvivair a Div of Comasec in | Santa Ana | — | ◇ UNVERIFIED |
| S2Sv 214-01 John Wayne | Costa Mesa | — | ◇ UNVERIFIED |
