| 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 |
| CCCity Cabinetmakers, INC | San Francisco | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CCCity & County of San Francisco | San Francisco | CA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| COCity Overhead Doors | San Francisco | CA | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| CPCKO Properties, LLC | San Francisco | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CMCleasby Manufacturing CO | San Francisco | CA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CLClic LLC Dba Andresen | San Francisco | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| CCoca-cola | San Francisco | CA | Food Manufacturing311900 | — | ◇ UNVERIFIED |
| CIColorgraphics INC | San Francisco | CA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| CSComcast Sportsnet Bay Area | San Francisco | CA | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| CFComplete Fabrications INC | San Francisco | CA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| CTConstance Therapeutics | San Francisco | CA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| CRConstructors Racing Group, LLC | San Francisco | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| CLCoral Labs | San Francisco | CA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| CICouncil INC | San Francisco | CA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| CTCreateme Technologies LLC | San Francisco | CA | Apparel Manufacturing315220 | — | ◇ UNVERIFIED |
| CPCrown Point Press | San Francisco | CA | Printing and Related Support Activities323122 | — | ◇ UNVERIFIED |
| DTDamian Torres Woodworks | San Francisco | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| DIDapi Inc, Dba Tasker Ai | San Francisco | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| DIDarling Ingredients INC | San Francisco | CA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| DIDarling International | San Francisco | CA | Food Manufacturing311224 | — | ◇ UNVERIFIED |
Del Gavio of California, INC. | San Francisco | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
Del Gavio of California, INC. | San Francisco | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| DSDelta Sandblasting CO. INC. | San Francisco | CA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| D5Demo 5 LLC | San Francisco | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| DCDenning Cabinetry | San Francisco | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| DCDesimone Consulting Engineering | San Francisco | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| DCDesimone Consulting Engineering - Usps | San Francisco | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |