| APAstro Pak Corporation - Ontario | Ontario | CA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| CZCarl Zeiss Meditec Production | Ontario | CA | Miscellaneous Manufacturing339115 | — | ◐ LIKELY ACTIVE |
| CCClassic Containers INC | Ontario | CA | Plastics and Rubber Products Manufacturing326160 | 100-499 | ◐ LIKELY ACTIVE |
| CPCoastal Pacific Food Distributors, INC. | Ontario | CA | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
Doble Engineering Company (Ontario, CA) | Ontario | CA | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
| FAFortune Avenue Foods | Ontario | CA | Food Manufacturing311211 | — | ◐ LIKELY ACTIVE |
| MLMira Loma Peaker Generating Station | Ontario | CA | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| NBNiagara Bottling, LLC - Philly St | Ontario | CA | Beverage and Tobacco Product Manufacturing312112 | 100-499 | ◐ LIKELY ACTIVE |
| PLParco, LLC | Ontario | CA | Plastics and Rubber Products Manufacturing326211 | — | ◐ LIKELY ACTIVE |
| PPhilips | Ontario | CA | Miscellaneous Manufacturing339114 | 100-499 | ◐ LIKELY ACTIVE |
| PCPrc Composites, LLC | Ontario | CA | Plastics and Rubber Products Manufacturing326130 | — | ◐ LIKELY ACTIVE |
| SSoupWerks | Ontario | CA | Food Manufacturing311411 | — | ◐ LIKELY ACTIVE |
| SPSouth Precision Machining | Ontario | CA | Transportation Equipment Manufacturing336413 | 1-19 | ◐ LIKELY ACTIVE |
| TFTropicale Foods, LLC. - Ontario | Ontario | CA | Food Manufacturing311520 | 100-499 | ◐ LIKELY ACTIVE |
| URUhp Resistors, INC. | Ontario | CA | Computer and Electronic Product Manufacturing334416 | 1-19 | ◐ LIKELY ACTIVE |
| ADAcademy Doors | Ontario | CA | Fabricated Metal Product Manufacturing332321 | — | ◐ LIKELY ACTIVE |
| AMAmrep Manufacturing Company LLC | Ontario | CA | Chemical Manufacturing325612 | — | ◐ LIKELY ACTIVE |
| BSBarnmaster Supply LLC Dba Marnmaster | Ontario | CA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| CACox a Division of Kls Doors | Ontario | CA | Machinery Manufacturing333514 | — | ◐ LIKELY ACTIVE |
| ECElite Comfort Solutions | Ontario | CA | Plastics and Rubber Products Manufacturing326150 | — | ◐ LIKELY ACTIVE |
Hudson Technologies Company | Ontario | CA | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| KGKellogg Garden Products | Ontario | CA | Chemical Manufacturing325311 | — | ◐ LIKELY ACTIVE |
Leggett & Platt INC | Ontario | CA | Plastics and Rubber Products Manufacturing326150 | — | ◐ LIKELY ACTIVE |
| NSNet Shapes INC | Ontario | CA | Primary Metal Manufacturing331512 | — | ◐ LIKELY ACTIVE |
| ROReconserve of California Ontario INC | Ontario | CA | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| TSThe Sherwin-williams Company | Ontario | CA | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| WMW M Barr & CO INC | Ontario | CA | Plastics and Rubber Products Manufacturing326130 | — | ◐ LIKELY ACTIVE |
| ARAbba Roller LLC | Ontario | CA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| ACAcheson Colloids Company | Ontario | CA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| APAdvanced Pattern and Mold | Ontario | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| AAAlum Alloy CO INC | Ontario | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| APAndrop Packaging INC | Ontario | CA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| BAB a E Systems | Ontario | CA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| BCBalda C Brewer INC | Ontario | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| BABeneficial Ag Services | Ontario | CA | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| BBBluetriton Brands | Ontario | CA | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| CPCalifornia Packaging Centers | Ontario | CA | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| CQCalifornia Quality Plastics | Ontario | CA | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| CCementpro | Ontario | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CPClement Pappas Ca | Ontario | CA | Food Manufacturing311411 | — | ◇ UNVERIFIED |
| CPCoast Plastics INC | Ontario | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| DMDesigner Metal Works and Lighting, INC. | Ontario | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| ECEagle Container | Ontario | CA | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| ECElite Comfort Solutions | Ontario | CA | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| ECElite Comfort Solutions | Ontario | CA | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| ELElite Logistics and Fulfillment | Ontario | CA | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| EFEvans Food Westna INC | Ontario | CA | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| EIExcel Industries INC | Ontario | CA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| EIExopack INC | Ontario | CA | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| FWFrank Wagner and Son | Ontario | CA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |