| RGRodney Griffin | Ontario | CA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| RMR&o Mc Intyre INC | Ontario | CA | Plastics and Rubber Products Manufacturing326220 | — | ◇ UNVERIFIED |
| RSR & S Performance INC | Ontario | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| RFRuiz Flour Tortillas | Ontario | CA | Food Manufacturing311830 | — | ◇ UNVERIFIED |
| RTRwp Transfer INC Dba Recycled Wood Products | Ontario | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RPRycoline Prods INC | Ontario | CA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| SLSafariland LLC | Ontario | CA | Leather and Allied Product Manufacturing316990 | — | ◇ UNVERIFIED |
| SLSafariland LLC | Ontario | CA | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| SCSafran Cabin Materials, LLC. | Ontario | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SPSandy P | Ontario | CA | Apparel Manufacturing315999 | — | ◇ UNVERIFIED |
| SRSanta Rosa Lead Products LLC | Ontario | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| SOSarodia Ontario LLC | Ontario | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| SSSean Stevens Dba Vellano Forged Wheels | Ontario | CA | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| SISefar INC | Ontario | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| STSierra Torque Converters,dba Nasir Kassa | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SISign Industries INC | Ontario | CA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| SFSkog Furniture | Ontario | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| SBSky Blue Telemarketing INC. | Ontario | CA | Miscellaneous Manufacturing339992 | — | ◇ UNVERIFIED |
| SBSky Blue Telemarketing INC. | Ontario | CA | Miscellaneous Manufacturing339992 | — | ◇ UNVERIFIED |
| SMSkytek Mfg CO | Ontario | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| SLSolar Link International INC | Ontario | CA | Leather and Allied Product Manufacturing316210 | — | ◇ UNVERIFIED |
| SWSouth West Concrete Products | Ontario | CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SNSoylent Nutrition | Ontario | CA | Food Manufacturing311824 | — | ◇ UNVERIFIED |
| SESprayline Enter. INC | Ontario | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SRStandard Register, INC. | Ontario | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SGSub-zero Group West, INC. | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335222 | — | ◇ UNVERIFIED |
| SBSummers Brothers Inc. | Ontario | CA | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| SGSunkist Growers, INC | Ontario | CA | Food Manufacturing311411 | — | ◇ UNVERIFIED |
| TPTcs Performance Products & Machining, INC. | Ontario | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| TSTechnical Safety Services, LLC | Ontario | CA | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| TITeefor2 INC | Ontario | CA | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| TITemple-inland, INC | Ontario | CA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| TITesla, INC. | Ontario | CA | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| TCThe Canvas Awning Company | Ontario | CA | Textile Product Mills314912 | — | ◇ UNVERIFIED |
| TCThe Carlstar Group LLC | Ontario | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TCThe Coca-cola Company - Ontario | Ontario | CA | Food Manufacturing311900 | — | ◇ UNVERIFIED |
| TNThe Newark Group, INC. | Ontario | CA | Paper Manufacturing322214 | — | ◇ UNVERIFIED |
| TOThe Outdoor Plus | Ontario | CA | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| TOThe Outdoor Plus Company, Inc. | Ontario | CA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| TDThermal Dynamics International, LLC | Ontario | CA | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
 The Winsford Corporation Dba Forbes Industries | Ontario | CA | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| TITin INC. Temple Inland, Dba | Ontario | CA | Paper Manufacturing322130 | — | ◇ UNVERIFIED |
| TPTlc Packaging INC | Ontario | CA | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| TITorco International CORP | Ontario | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| TITorco International Corporation | Ontario | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| TVTreasure Valley Steel INC | Ontario | OR | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| TVTreasure Valley Steel INC | Ontario | OR | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| TITree Island Wire USA INC Dba Halsteel INC | Ontario | CA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| TFTriangle Fasteners INC | Ontario | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| UCUltra Chem Labs | Ontario | CA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
