| NGNci Group Inc., Dba, Metal Coaters of Ca | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| NHNel Hydrogen INC | Rancho Cucamonga | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| NENicco Engineering INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| OBOerlikon Balzers Coating USA INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| OTOld Town Baking Company | Rancho Cucamonga | CA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| OSOptima Scale Manufacturing Inc | Rancho Cucamonga | CA | Machinery Manufacturing333997 | — | ◇ UNVERIFIED |
| OIOrozco International INC | Rancho Cucamonga | CA | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| OEOtis Elevator Company | Rancho Cucamonga | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| PFPacific Fabrication INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| PPPacific Paperboard Converting | Rancho Cucamonga | CA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| PMPamco Machine Works INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PCPara Chemical Incorporated | Rancho Cucamonga | CA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| PPParadigm Packaging West LLC Dba Comar | Rancho Cucamonga | CA | Plastics and Rubber Products Manufacturing326160 | — | ◇ UNVERIFIED |
| PWPar West | Rancho Cucamonga | CA | Machinery Manufacturing333996 | — | ◇ UNVERIFIED |
 Penwal Industries INC | Rancho Cucamonga | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PIPhil Inter Pharma USA INC | Rancho Cucamonga | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PNPic N Save Distribution Center | Rancho Cucamonga | CA | Textile Mills313310 | — | ◇ UNVERIFIED |
| PCPm Company LLC | Rancho Cucamonga | CA | Paper Manufacturing322299 | — | ◇ UNVERIFIED |
| PLPrimo LLC Dba Ikom Printing Services | Rancho Cucamonga | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| PTPro Tek Models, LLC | Rancho Cucamonga | CA | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |
| PMProulx Manufacturing | Rancho Cucamonga | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PPPsa Printing&mailing Services INC Dba Psa Print Group | Rancho Cucamonga | CA | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| RCRancho Cucamonga Police Department | Rancho Cucamonga | CA | Transportation Equipment Manufacturing336992 | — | ◇ UNVERIFIED |
| RMRancho Magnum Range | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| RMRancho Metal Polishing INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| RRRitemp Refrigeration, INC. | Rancho Cucamonga | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| RARoger Anderson | Rancho Cucamonga | CA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| RERomero's Engineering INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| RPRSB Properties, LLC | Rancho Cucamonga | CA | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| SISanrio INC. | Rancho Cucamonga | CA | Miscellaneous Manufacturing339940 | — | ◇ UNVERIFIED |
| SMScheu Manufacturing Company | Rancho Cucamonga | CA | Machinery Manufacturing333414 | — | ◇ UNVERIFIED |
 Schlosser Forge CO | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| SISearing Ind | Rancho Cucamonga | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| SWSign Way | Rancho Cucamonga | CA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| STSi Testing | Rancho Cucamonga | CA | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| SPSoc-co Plastic Coating CO | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SISonora Industries | Rancho Cucamonga | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| SSSpectra Sensors INC | Rancho Cucamonga | CA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| SDStanley Doors Sys | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
 Steelcase INC. | Rancho Cucamonga | CA | Furniture and Related Product Manufacturing337214 | — | ◇ UNVERIFIED |
 Superior Tank CO INC | Rancho Cucamonga | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SFSweet Fuels - Baseline LLC | Rancho Cucamonga | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| TCTechnical Creative Solutions Engineering Corporation | Rancho Cucamonga | CA | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| TTekton | Rancho Cucamonga | CA | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| THT Hasegawa | Rancho Cucamonga | CA | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| TBThe Brewmill, LLC. | Rancho Cucamonga | CA | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| TKThe Kindred CORP. | Rancho Cucamonga | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| TDTPM Distribution, LLC | Rancho Cucamonga | CA | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| TCTransilwrap Company INC. | Rancho Cucamonga | CA | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| TITree Island Wire | Rancho Cucamonga | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
