| GAGeneral Atomics - Poway - A47 | Poway | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Poway - G98 | Poway | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Sabre Springs - A05 | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Sabre Springs - A05A | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| GAGkn Aerospace Chem-tronics INC | El Cajon | — | ◐ LIKELY ACTIVE |
| KTKnapheide Truck Equipment San Diego | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| LVLMI - Vista | Vista | 20–99 | ◐ LIKELY ACTIVE |
| LMLockheed Martin Corporation US CA San Diego 30th St ST E (5578) | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| MSMaritime Solutions San Diego | San Diego | 500+ | ◐ LIKELY ACTIVE |
| NENaval Engineering Technology LLC. | San Marcos | 1–19 | ◐ LIKELY ACTIVE |
| NNgsp-ca75 | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| PTPull Tarps | El Cajon | 20–99 | ◐ LIKELY ACTIVE |
| RTRaytheon Technologies Corporation, Pratt & Whitney Division, CMC Center of Excellence (Carlsbad, CA) | Carlsbad | 20–99 | ◐ LIKELY ACTIVE |
| RLRegalis LLC | Chula Vista | — | ◐ LIKELY ACTIVE |
| SDSan Diego Adesa | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| SDSan Diego- Metropolitan | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| SRScot Riddle | Santee | — | ◐ LIKELY ACTIVE |
| SSSerco - San Diego, CA | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| TMTrident Maritime Systems San Diego | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| T2Tsca 2024 | National City | 20–99 | ◐ LIKELY ACTIVE |
| TATurbine Aviation INC | Oceanside | — | ▲ REPORTED CLOSED |
| VAVelo Aviation LLC | San Diego | — | ▲ REPORTED CLOSED |
| ALAlumicraft LLC | Santee | 1–19 | ◇ UNVERIFIED |
Bjs&t Enterprises Dba San Diego Powder Coating | El Cajon | — | ◇ UNVERIFIED |
| BEBlaha Enterprises INC Dba Quality Machining | Ramona | 1–19 | ◇ UNVERIFIED |
| CMCart Mart INC | San Marcos | 100–499 | ◇ UNVERIFIED |
| DKDirt King Fabrication | San Diego | 1–19 | ◇ UNVERIFIED |
| JMJerames Manufacturing | El Cajon | 1–19 | ◇ UNVERIFIED |
| KFKaiser Foundation Hospitals | San Diego | — | ◇ UNVERIFIED |
| KMK-tech Machine INC | Vista | — | ◇ UNVERIFIED |
| MGMarshall Genuine Products LLC | Chula Vista | — | ◇ UNVERIFIED |
| MHMiguel Hernandez Yacht Ref | San Diego | 1–19 | ◇ UNVERIFIED |
| VPVersatech Precision | San Diego | 1–19 | ◇ UNVERIFIED |
| DWDenso Wireless Systems America | Vista | — | ▲ REPORTED CLOSED |