 Aerospace Engineering LLC | Santa Ana | 20–99 | ● ACTIVE |
 Astech Engineered Products INC | Santa Ana | 100–499 | ● ACTIVE |
 Airborne Systems North America of Ca INC | Santa Ana | — | ● ACTIVE |
 American Truck & Trailer Body-santa Ana LLC | Santa Ana | — | ● ACTIVE |
 Bend-tek, INC. | Santa Ana | — | ● ACTIVE |
| IAIntegral Aerospace, LLC | Santa Ana | — | ● ACTIVE |
| MIMetal Improvement Company, LLC | Santa Ana | — | ● ACTIVE |
 Symbolic Displays, INC | Santa Ana | — | ● ACTIVE |
 Advanced Digital Manufacturing LLC | Santa Ana | — | ● ACTIVE |
 Aerospace Driven Technologies, INC | Santa Ana | — | ● ACTIVE |
 Cinar, INC | Santa Ana | — | ● ACTIVE |
 Conx Innovations, LLC | Santa Ana | — | ● ACTIVE |
 Hunt, James P | Santa Ana | — | ● ACTIVE |
 Noble Aerospace LLC | Santa Ana | — | ● ACTIVE |
 Wyvern Technologies | Santa Ana | — | ● ACTIVE |
 All American Racers, INC. | Santa Ana | — | ◐ LIKELY ACTIVE |
| BPBeyond Precision, LLC | Santa Ana | — | ◐ LIKELY ACTIVE |
| CEContour Engineering INC. | Santa Ana | — | ◐ LIKELY ACTIVE |
| ECEaton Corporation | Santa Ana | 100–499 | ◐ LIKELY ACTIVE |
| CECarich Enterprises, INC. | Santa Ana | — | ◐ LIKELY ACTIVE |
| CHCalifornia Hazardous Svcs INC | Santa Ana | — | ◇ UNVERIFIED |
| SASmiths Aerospace | Santa Ana | — | ◇ UNVERIFIED |
| WMWesterly Marine INC | Santa Ana | — | ◇ UNVERIFIED |
| MUMagdrive US INC | Santa Ana | — | ◐ LIKELY ACTIVE |
| 8O888 on Main Building | Santa Ana | — | ◇ UNVERIFIED |
| AEA & E Systems INC. | Santa Ana | — | ◇ UNVERIFIED |
| AIAirhawk International, LLC | Santa Ana | — | ◇ UNVERIFIED |
| AMAlco Metal Fab | Santa Ana | — | ◇ UNVERIFIED |
| ACApec CORP | Santa Ana | — | ◇ UNVERIFIED |
| BRBasseri Real Estate LLC | Santa Ana | — | ◇ UNVERIFIED |
| BTBend Tek INC | Santa Ana | — | ◇ UNVERIFIED |
| CMCameron Metal Cutting | Santa Ana | — | ◇ UNVERIFIED |
| CCCcdi Composites INC | Santa Ana | — | ◇ UNVERIFIED |
| CGCity Gardens Apartment Complex | Santa Ana | — | ◇ UNVERIFIED |
| CRCoastal Risk Management INC | Santa Ana | — | ◇ UNVERIFIED |
| CYColumbia Yacht Corporation | Santa Ana | — | ◇ UNVERIFIED |
| DMD&a Machine Shop | Santa Ana | — | ◇ UNVERIFIED |
| DFDiesel Fuel Technologies LLC | Santa Ana | — | ◇ UNVERIFIED |
| FTFreedom Truck Body | Santa Ana | — | ◇ UNVERIFIED |
| GMGarrison Manufacturing INC | Santa Ana | — | ◇ UNVERIFIED |
| GAGe Aviation Systems LLC | Santa Ana | — | ◇ UNVERIFIED |
| GCGkn Chemtronics INC. | Santa Ana | — | ◇ UNVERIFIED |
| HTHelfer Tool Company | Santa Ana | — | ◇ UNVERIFIED |
| HEHrl Engineering & Manufacturing Dba Bel Air Machining | Santa Ana | — | ◇ UNVERIFIED |
| HEHunt Enterprises | Santa Ana | — | ◇ UNVERIFIED |
| ITImaginative Technologies INC | Santa Ana | — | ◇ UNVERIFIED |
| ISImagine Sofas LLC | Santa Ana | — | ◇ UNVERIFIED |
| ITImpco Technologies | Santa Ana | — | ◇ UNVERIFIED |
| IMInput Manufacturing CORP | Santa Ana | — | ◇ UNVERIFIED |
| JHJamboree Housing | Santa Ana | — | ◇ UNVERIFIED |
