| SSStatewide Safety Systems | Santa Ana | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SHStremicks Heritage Foods | Santa Ana | CA | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| SCStrip Clean CO | Santa Ana | CA | Miscellaneous Manufacturing339914 | — | ◇ UNVERIFIED |
| SLSuperb LLC | Santa Ana | CA | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| SMSuperior Mfg CO | Santa Ana | CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| SLSurefire, LLC | Santa Ana | CA | Electrical Equipment, Appliance & Component Manufacturing335129 | — | ◇ UNVERIFIED |
| SASurvivair a Div of Comasec in | Santa Ana | CA | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| SHSwift Health Systems INC Dba Inbrace | Santa Ana | CA | Miscellaneous Manufacturing339114 | — | ◇ UNVERIFIED |
| SHSwisher Hygiene | Santa Ana | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
Symbolic Displays INC | Santa Ana | CA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| STSyncro Tech | Santa Ana | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| TCTaber Company INC | Santa Ana | CA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| TCTaber Company INC | Santa Ana | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| TTTammy Taylor Nails | Santa Ana | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| THTan Hoang Huong Bakeri and Deli | Santa Ana | CA | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| TLTarantino Landscape | Santa Ana | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
| TCTech Craft | Santa Ana | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TTesla-energy | Santa Ana | CA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| TATextron Aerospace Fasteners | Santa Ana | CA | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| TBThe Brethren INC Dba Fire Safety First | Santa Ana | CA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| TDThe Dot Corporation | Santa Ana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TFThe Foster Printing Co, INC. | Santa Ana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TGThe Good Beer Company | Santa Ana | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| TGThe Good Beer Company | Santa Ana | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| THThe Halftone Shop | Santa Ana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TLThe Label Company | Santa Ana | CA | Printing and Related Support Activities323112 | — | ◇ UNVERIFIED |
| TTThe Tjx Companies, INC. | Santa Ana | CA | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| TWThe Workshop Oc INC | Santa Ana | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| TYThe Yebo Group | Santa Ana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TYThe Yebo Group LLC | Santa Ana | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TDThree Dots | Santa Ana | CA | Apparel Manufacturing315212 | — | ◇ UNVERIFIED |
| TNTibbet's Newport Corporation Dba Tibbet's Paint | Santa Ana | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| TETiburon Engineering LLC | Santa Ana | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| TCTimberwolf Custom Garage Doors | Santa Ana | CA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| TITipton-goss INC | Santa Ana | CA | Textile Mills313320 | — | ◇ UNVERIFIED |
| TFTrade Finishing Corporation | Santa Ana | CA | Paper Manufacturing322230 | — | ◇ UNVERIFIED |
| TRTrail Rite INC | Santa Ana | CA | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| TBTrinh Bui Dba Bdt Fashion | Santa Ana | CA | Apparel Manufacturing315212 | — | ◇ UNVERIFIED |
| TDTriple Dot Corporation | Santa Ana | CA | Plastics and Rubber Products Manufacturing326160 | — | ◇ UNVERIFIED |
| TSTroy Systems INC | Santa Ana | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| TTTru Top INC | Santa Ana | CA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| TATsubaki Atr LLC | Santa Ana | CA | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
Ttm Technologies INC | Santa Ana | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| UBUnited Biologics INC | Santa Ana | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| UCUremet CORP | Santa Ana | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| USUsps Santa Ana | Santa Ana | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| VCVerk's Custom Cabinets INC | Santa Ana | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| VRVertical Ride Solutions | Santa Ana | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| VTVertical Transport | Santa Ana | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| VTVertical Transport | Santa Ana | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |