| HIHORIBA Instruments Incorporated - Irvine Scientific | Irvine | 20–99 | ● ACTIVE |
| IEInfinite Electronics International, INC. | Irvine | — | ● ACTIVE |
| ITIntellian Technologies Usa, INC. | Irvine | — | ● ACTIVE |
Intermed Video Technologies INC | Irvine | — | ● ACTIVE |
Jazz Semiconductor Trusted Foundry, INC | Irvine | — | ● ACTIVE |
Locata CORP | Irvine | — | ● ACTIVE |
Majestic12 Electronics, INC. | Irvine | — | ● ACTIVE |
Microwave Dynamics, LLC | Irvine | — | ● ACTIVE |
M-pulse Electronic Components INC. | Irvine | — | ● ACTIVE |
Nimbus Data, INC. | Irvine | — | ● ACTIVE |
Omnitron Systems Technology, INC. | Irvine | — | ● ACTIVE |
Orion Images Corporation | Irvine | — | ● ACTIVE |
| PMPeterson Marine Electronics INC. | Irvine | — | ● ACTIVE |
Rift Systems INC | Irvine | — | ● ACTIVE |
Rje International, INC. | Irvine | — | ● ACTIVE |
Sena Technologies, INC | Irvine | — | ● ACTIVE |
Stancil CORP | Irvine | — | ● ACTIVE |
Standard Matter LLC | Irvine | — | ● ACTIVE |
Stardust Orbital Corporation | Irvine | — | ● ACTIVE |
Strucvue Medical, INC. | Irvine | — | ● ACTIVE |
Teletrac Navman US LTD. | Irvine | — | ● ACTIVE |
Transsip INC | Irvine | — | ● ACTIVE |
| XIXcelerium INC | Irvine | — | ● ACTIVE |
Zadara, INC. | Irvine | — | ● ACTIVE |
| LHLumitron Holdings INC | Irvine | 20–99 | ◐ LIKELY ACTIVE |
Nanovea, INC. | Irvine | 20–99 | ◐ LIKELY ACTIVE |
Federal Custom Cable, LLC | Irvine | — | ◐ LIKELY ACTIVE |
| IEIrvine Electronics LLC | Irvine | 100–499 | ◐ LIKELY ACTIVE |
Teradek LLC | Irvine | — | ◐ LIKELY ACTIVE |
Tricom Research, INC. | Irvine | — | ◐ LIKELY ACTIVE |
Vubiq Networks, INC. | Irvine | — | ◐ LIKELY ACTIVE |
| AIAnduril Industries, INC. | Irvine | — | ◐ LIKELY ACTIVE |
| FLFluxergy LLC | Irvine | — | ◐ LIKELY ACTIVE |
| HIHoriba Instruments INC | Irvine | 20–99 | ◐ LIKELY ACTIVE |
| IIrvine | Irvine | 1–19 | ◐ LIKELY ACTIVE |
| JCJanteq CORP | Irvine | — | ◐ LIKELY ACTIVE |
| TIThe Irvine Company | Irvine | 1–19 | ◐ LIKELY ACTIVE |
| ZMZOLL Medical Corporation - Irvine, CA. | Irvine | 20–99 | ◐ LIKELY ACTIVE |
| KEKaiser Electroprecision | Irvine | — | ◇ UNVERIFIED |
| MOMeggit Orange County INC | Irvine | — | ◇ UNVERIFIED |
| NRNh Research | Irvine | 20–99 | ◇ UNVERIFIED |
| RDRacal Dana Instruments INC | Irvine | — | ◇ UNVERIFIED |
| SCSanmina Corporation | Irvine | — | ◇ UNVERIFIED |
| TCT C Cosmotronic INC Dba Cosmotronic | Irvine | — | ◇ UNVERIFIED |
| ATAstronics Test Systems INC | Irvine | — | ◐ LIKELY ACTIVE |
| EIEP Irvine CA | Irvine | 100–499 | ◐ LIKELY ACTIVE |
| HHcaiv02 | Irvine | 20–99 | ◐ LIKELY ACTIVE |
| HMHexagon Manufacuring Intelligence Irvine HMI | Irvine | 100–499 | ◐ LIKELY ACTIVE |
| HHHgd Holdings, INC. | Irvine | — | ◐ LIKELY ACTIVE |
| KAKIP America, Inc. - California | Irvine | 1–19 | ◐ LIKELY ACTIVE |