| SSSouth San Francisco Ca Bakery | South San Francisco | CA | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| TAThe Acme Bread Co Div III | South San Francisco | CA | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
Vomela Specialty Company - South San Francisco | South San Francisco | CA | Printing and Related Support Activities323111 | 1-19 | ◐ LIKELY ACTIVE |
| ASAbbvie Stemcentrx LLC | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| BMB Metal Frabrication INC | South San Francisco | CA | Machinery Manufacturing333414 | 20-99 | ◇ UNVERIFIED |
| CICellares INC | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| CBCoherus Biosciences | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| FFFarallon Fisheries | South San Francisco | CA | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| KGKk Graphics | South San Francisco | CA | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| MMMina Metals CO INC | South San Francisco | CA | Machinery Manufacturing333414 | 1-19 | ◇ UNVERIFIED |
| NBNgm Biopharmaceuticals INC | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SCSee's Candies, INC | South San Francisco | CA | Food Manufacturing311352 | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | South San Francisco | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| TBTwist Bioscience | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| 1H169 Harbor Way | South San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| 5D580 Dubuque Ave Ssf | South San Francisco | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| 7G701 Gateway Center LLC | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ARA&a Ready Mixed Concrete INC | South San Francisco | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ASAbram Scientific INC | South San Francisco | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| ABAcme Bread | South San Francisco | CA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| APActelion Pharmaceuticals Us, INC | South San Francisco | CA | Chemical Manufacturing325412 | — | ▲ REPORTED CLOSED |
| AIAesculap INC | South San Francisco | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| ABAether Biomachines | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ACAgenovir Corporation | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ATAHP Tools, Inc | South San Francisco | CA | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| ARAlexandria Real Estate Equities INC | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| APAll Pro Facility Supplies | South San Francisco | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| APAlpha Press INC | South San Francisco | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| ARAlpine Roads INC | South San Francisco | CA | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| ACAlvah Contractors INC | South San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| AMAmbys Medicines | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AGAmericana Garage Door Mfg | South San Francisco | CA | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| ALAnderson Lithograph | South San Francisco | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AEApplied Elastomerics. INC. | South San Francisco | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AEApplied Elstomerics, Incorporated | South San Francisco | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AMApplied Molecular Transport | South San Francisco | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AMApplied Molecular Transport | South San Francisco | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| ACAre-technology Center Ssf LLC | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ASA Silvestri CORP | South San Francisco | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| APAstrazeneca Pharmaceuticals LP | South San Francisco | CA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ATAudentes Therapeutics INC | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ATAudentes Therapeutics INC | South San Francisco | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| ASAuto-chlor System of Northern Ca INC | South San Francisco | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| APAxys Pharmaceuticals INC | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BBBarbara Butler Artist-builder INC | South San Francisco | CA | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| BMBarrango Manufacturing | South San Francisco | CA | Textile Mills313210 | — | ◇ UNVERIFIED |
| BLBaymedica LLC | South San Francisco | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BFBerkeley Farms INC | South San Francisco | CA | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| BBBettera Brands, LLC | South San Francisco | CA | Food Manufacturing311340 | — | ◇ UNVERIFIED |
| BCBia Cordon Bleu INC. | South San Francisco | CA | Food Manufacturing311513 | — | ◇ UNVERIFIED |