American Tool & Engineering | San Diego | — | ◇ UNVERIFIED |
| CBCarlson & Beauloye Machine Shop INC | San Diego | — | ◇ UNVERIFIED |
| DTDelstar Technologies | El Cajon | — | ◇ UNVERIFIED |
| EGE G Electro Graph INC | Vista | — | ◇ UNVERIFIED |
| LFLa Fe Tortilleria INC | San Marcos | — | ◇ UNVERIFIED |
| LMLandmark Mfg INC | Oceanside | 1–19 | ◇ UNVERIFIED |
| PCPresidio Cleaners | San Diego | — | ◇ UNVERIFIED |
| UMUnique Metal Products, INC. | Oceanside | — | ◇ UNVERIFIED |
| 1D130-San Diego | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| 3S3D Systems - San Diego | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| ASAccu-seal Sencorpwhite, INC. | San Marcos | — | ▲ REPORTED CLOSED |
| AMApplied Membranes, Inc. | Vista | 100–499 | ◐ LIKELY ACTIVE |
| CMCa66 Mil Aero | El Cajon | 20–99 | ◐ LIKELY ACTIVE |
| DPDover Pumps & Process Solutions Segment, INC. | National City | — | ◐ LIKELY ACTIVE |
| EMEssilorLuxottica- Meridian Optical San Diego | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| FCFresh Creative Foods | Vista | 100–499 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G76 | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G86 | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G87 | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G92 | San Diego | 500+ | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G94 | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G95 | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - G97 | San Diego | 100–499 | ◐ LIKELY ACTIVE |
| GAGeneral Atomics - Rancho Bernardo - SSC01 | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| IMIntegrity Municipal Systems LLC - California | Poway | 1–19 | ◐ LIKELY ACTIVE |
| P1Plant 1 | San Diego | 20–99 | ◐ LIKELY ACTIVE |
| STSolar Turbines Inc. 2200 Pacific Hwy | San Diego | 500+ | ◐ LIKELY ACTIVE |
| WFWilliams Form Engineering California | San Diego | 1–19 | ◐ LIKELY ACTIVE |
| ZPZodiac Pool Systems | Carlsbad | 20–99 | ◐ LIKELY ACTIVE |
| AWAmerican Wave Machines, Inc. | Solana Beach | 1–19 | ◇ UNVERIFIED |
| BHB & H Tool CO | San Marcos | — | ◇ UNVERIFIED |
| CMCnt Metal Solutions INC | Spring Valley | 1–19 | ◇ UNVERIFIED |
| FJFlying J Machine INC | Escondido | 1–19 | ◇ UNVERIFIED |
| FRFortin Racing INC | El Cajon | — | ◇ UNVERIFIED |
| IMInnovative Metal Products INC | Vista | — | ◇ UNVERIFIED |
| KIKeco INC. | San Diego | 1–19 | ◇ UNVERIFIED |
| LILabel Id Technologies | San Diego | 1–19 | ◇ UNVERIFIED |
| MIMachinex INC | Chula Vista | 1–19 | ◇ UNVERIFIED |
| NNordson | Carlsbad | — | ◇ UNVERIFIED |
| WIWater Innovations INC | Escondido | — | ◇ UNVERIFIED |