| JWJacobs Woodworks | San Diego | CA | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| JAJ a Ferrari Print & Imaging LLC Dba Economy Print & Image | San Diego | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| JCJankovich CO San Diego Facility | San Diego | CA | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| JTJecure Therapeutics | San Diego | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| JFJerome's Furniture | San Diego | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| JTJescam Trio INC Dba Creative Coatings | San Diego | CA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| JGJet Graphics INC | San Diego | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| JEJ&L Eppig Brewing, LLC | San Diego | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| JJJoe Jimenez | San Diego | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| JDJohanson Dielectrics, INC. | San Diego | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| JCJohnson Controls INC | San Diego | CA | Miscellaneous Manufacturing339940 | — | ◇ UNVERIFIED |
| JJJohnson & Johnson Pharmaceutical R&d LLC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| JMJohnson Matthey | San Diego | CA | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| JGJordan Gafa | San Diego | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| JMJose Miguel Pindea Castellanos | San Diego | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| JIJsquared INC. | San Diego | CA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| JSJ&S Support Services Inc | San Diego | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| KDKAAR Direct Mail & Fulfillment LLC | San Diego | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| KFKaiser Foundation Hospitals | San Diego | CA | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| KWKatie Williams | San Diego | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| KIKeco INC. | San Diego | CA | Machinery Manufacturing333914 | — | ◇ UNVERIFIED |
| KLKeiller Leadership Academy | San Diego | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| KMKelpac Medical Dba Kelcourt Plastics | San Diego | CA | Plastics and Rubber Products Manufacturing326291 | — | ◇ UNVERIFIED |
| KKenamar | San Diego | CA | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| KTKeysight Technologies | San Diego | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| KJKhanh Jerry Hoang and Tammy Dang Hoang | San Diego | CA | Food Manufacturing311991 | — | ◇ UNVERIFIED |
| KGKing Graphics Colmol INC | San Diego | CA | Apparel Manufacturing315211 | — | ◇ UNVERIFIED |
| KPKNB Printing Solutions, Inc. | San Diego | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| KKone | San Diego | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| KIKpap INC Dba Frost Medical Pharmacy | San Diego | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| KMKpbs Mt Miguel-transmitter | San Diego | CA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| K1Kr 1335 Broadway, LLC | San Diego | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| KEKreiss Enterprises INC | San Diego | CA | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| KEKreiss Enterprises INC | San Diego | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
 Ksaria Service Corporation | San Diego | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
 Kulr Technology Corporation INC | San Diego | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| Kulr Technology Group | San Diego | CA | Leather and Allied Product Manufacturing316110 | — | ◇ UNVERIFIED |
| KIKurtana Inc | San Diego | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| KAKyocera Avx Components | San Diego | CA | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| LILabel Id Technologies | San Diego | CA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| LILabel Id Technologies INC | San Diego | CA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| LJLa Jolla Biologics | San Diego | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| LJLa Jolla Pharmaceutical Company | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLa Maestra Family Clinic INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLa Maestra Family Clinic INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLa Maestra Family Clinic INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLa Maestra Family Clinic INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LSLeong-kuba Sea Products, INC. | San Diego | CA | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| LULevel Up Pharmaceuticals INC | San Diego | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LCLiberty Call Distilling LLC | San Diego | CA | Beverage and Tobacco Product Manufacturing312140 | — | ◇ UNVERIFIED |
