| PPPremiere Pallet INC | Ontario | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| PRPremiere Rack Solutions, INC. | Ontario | CA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PMPrimos Machine Shop LLC | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PLPrinter Labels INC | Ontario | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| PPPrisco Printers Service | Ontario | CA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PMPr Machine Works, INC. | Ontario | OH | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PPProactive Packaging and Display | Ontario | CA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| PWProfessional Wood Products | Ontario | CA | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PFProgressive Fastening Systems | Ontario | CA | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
| PIPromarks INC | Ontario | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| PPPulsar Products INC. | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| QCQuality Control Plating | Ontario | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| QIQuality Innovations INC | Ontario | CA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| QWQuebecor World/ontario Div | Ontario | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RLRab Lighting | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| RFRama Foods Manufacture CORP | Ontario | CA | Food Manufacturing311823 | — | ◇ UNVERIFIED |
| RPRay Products INC | Ontario | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| RCRaytheon Company | Ontario | CA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| RERdm Electric Company INC | Ontario | CA | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| RPReed Printing INC | Ontario | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RFReel Furniture INC | Ontario | CA | Beverage and Tobacco Product Manufacturing312229 | — | ◇ UNVERIFIED |
| RRRegal Rexnord CORP | Ontario | CA | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| RERegards Enterprises Inc | Ontario | CA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| RDRenaissance Door & Trim INC | Ontario | CA | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| RMRexco Met Dba Rexco | Ontario | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| RNRey Nelson Printing | Ontario | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RPReyrich Plastics | Ontario | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| RWRFC Wire Forms, Inc., a California corporation | Ontario | CA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| RARichard Allen Scientific | Ontario | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RCRichland Communities | Ontario | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| RCRichland Communities | Ontario | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| RCRichland Communities | Ontario | CA | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| RMRickard Metals, Inc. | Ontario | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RARiddell All American Sports | Ontario | CA | Textile Mills313312 | — | ◇ UNVERIFIED |
| RIR & I Industries | Ontario | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RIRj Industries | Ontario | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| RJR & J Welding & Metal Fabrication | Ontario | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| 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 | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| SLSafariland LLC | Ontario | CA | Leather and Allied Product Manufacturing316990 | — | ◇ 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 |
