| BABismark Auto Body & Paint | San Francisco | CA | Transportation Equipment Manufacturing336992 | — | ◇ UNVERIFIED |
| BCBlack Crate Designs | San Francisco | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| BJBlack Jet Baking Co. | San Francisco | CA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BSBlueprint Studios | San Francisco | CA | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| BBm-ai-llc | San Francisco | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BGBode Gravel CO | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BDBorden Decal Company | San Francisco | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| BBoxcabco | San Francisco | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| BIBragg Investment Company INC. | San Francisco | CA | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| BCBrannan Cleaners, INC. | San Francisco | CA | Machinery Manufacturing333312 | — | ◇ UNVERIFIED |
| BBBreadbelly B12, Inc | San Francisco | CA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BRBrighten Restaurant Service | San Francisco | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| BEBrothers Energy Incorporated | San Francisco | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| BCBusiness Cards Tomorrow | San Francisco | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| CCCaffe Classico INC | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CDCaffe D'melanio | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CRCaffe Roma Coffee CO | San Francisco | CA | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| CRCaffe Roma Coffee Roasting CO | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CSCaffe Soma Coffee | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CTCaffe Trieste | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CTCaffe Trieste | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CTCaffe Trieste INC | San Francisco | CA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CACalifornia Auto Care | San Francisco | CA | Plastics and Rubber Products Manufacturing326212 | — | ◇ UNVERIFIED |
| CMCalifornia Model & Design Group INC | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335121 | — | ◇ UNVERIFIED |
| COCalifornia Office Service | San Francisco | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
 Capella Space | San Francisco | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| CWCarla Way Kuen Lee Dba L & L Manufacturer | San Francisco | CA | Apparel Manufacturing315299 | — | ◇ UNVERIFIED |
| CSCarroll Street Partners Dba Goldseal | San Francisco | CA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| CLCasella Lighting CO | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335121 | — | ◇ UNVERIFIED |
| CBCbs Broadcasting INC Dba Kpix-tv | San Francisco | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| CDCcsf Department of Technology | San Francisco | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| CLCcsf-puc/street Lighting | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335129 | — | ◇ UNVERIFIED |
| CTCcsf-puc Ti Warehouse | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| CXC-dental X-ray | San Francisco | CA | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| CBCellarmaker Brewing Company | San Francisco | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| CSCemex San Francisco (m) | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCentral Concrete Supply | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCentral Concrete Supply Co, INC | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPChampion Powder Coating | San Francisco | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CVCherry Voodoo LLC | San Francisco | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| CCChinatown Community Development Center | San Francisco | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CUChurn Urban Creamery | San Francisco | CA | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| CLCirca Lighting | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| COCirca of America, LLC | San Francisco | CA | Apparel Manufacturing315210 | — | ◇ UNVERIFIED |
| CSCisco Systems INC. | San Francisco | CA | Computer and Electronic Product Manufacturing334118 | — | ◇ UNVERIFIED |
| CSCisco Systems, INC. | San Francisco | CA | Computer and Electronic Product Manufacturing334118 | — | ◇ UNVERIFIED |
| CSCisco Systems Inc-sfo-22 | San Francisco | CA | Computer and Electronic Product Manufacturing334610 | — | ◇ UNVERIFIED |
| CACity and County of San Francisco | San Francisco | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| CACity and County of San Francisco Puc | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335132 | — | ◇ UNVERIFIED |
| CACity and County of San Francisco, Sfpuc | San Francisco | CA | Miscellaneous Manufacturing339940 | — | ◇ UNVERIFIED |
