| HIHologic INC | San Diego | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| HIHologic, INC | San Diego | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| HIHologic, INC. | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| HIHologic INC Dba Cokiya | San Diego | CA | Computer and Electronic Product Manufacturing334517 | — | ◇ UNVERIFIED |
| HBHome Brew Mart, INC Dba Ballast Point | San Diego | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| HBHookup Baits, INC. | San Diego | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| HVHoya Vision Care | San Diego | CA | Miscellaneous Manufacturing339115 | — | ◇ UNVERIFIED |
| HSHs Supplies LLC | San Diego | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| HNHughes Network Systems LLC | San Diego | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| HHydranautics | San Diego | CA | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| HIHyperikon, INC. | San Diego | CA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
| IBIconovir Bio INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IPIdeal Products Acquisitions LLC | San Diego | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| ICIdec Corporation | San Diego | CA | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| IIId Images LLC | San Diego | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| IDIkon Displays, INC | San Diego | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| IIllumina-cradle | San Diego | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| IIImmunicom INC | San Diego | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| IIImmunicom INC. | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IIImmunitybio, INC. | San Diego | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| IHImperial Hardwood Company | San Diego | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| IIImpressions in Ink Enterprises LLC | San Diego | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| ICIndustry Cycles of San Diego | San Diego | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
 Infineon Technologies, San Diego | San Diego | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| IBInfixion Bioscience INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| IIInnopop INC | San Diego | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ITInnovative Tub Solutions Inc. | San Diego | CA | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| ITInnovo Therapeutics INC | San Diego | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| IIInnovotherapeutics INC | San Diego | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| IPInovio Pharmaceuticals INC | San Diego | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| IPInovio Pharmaceuticals INC | San Diego | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| IMIn-place Machining CO LLC | San Diego | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| IIInsmed INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ICIntel Corporation San Diego | San Diego | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| IWInterior Wood Millwork & Cabinetry | San Diego | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| ICInternational Composites Group INC | San Diego | CA | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| IMInternational Marine and Industrial Applicators | San Diego | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| IMInternational Marine & Industrial Applicators INC | San Diego | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| IPInternational Paint LLC | San Diego | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| ITInternational Trailer Services INC | San Diego | CA | Machinery Manufacturing333996 | — | ◇ UNVERIFIED |
| IAIntrepid Automation | San Diego | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| IInvivogen | San Diego | CA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| ITInvivoscribe Technolgies INC. | San Diego | CA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| ILIriSys, LLC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ITIronside Technologies, LLC | San Diego | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| ICIrvine Company | San Diego | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| ICIrvine Company Apartment Communities | San Diego | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| IBIZOLA Bakery | San Diego | CA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| JIJabil INC | San Diego | CA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| JPJack Porter Trustee, Residuary Trust | San Diego | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
