Bmk Precision, LLC | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ▲ REPORTED CLOSED |
| CQCalifornia Quality Plastics INC | Ontario | CA | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| CQCalifornia Quality Plastics, INC. | Ontario | CA | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| JEJcm Engineering CORP | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MPMelmarc Products Inc | Ontario | CA | Printing and Related Support Activities323113 | 100-499 | ◐ LIKELY ACTIVE |
| NINew- Indy Ontario, LLC | Ontario | CA | Paper Manufacturing322120 | — | ◐ LIKELY ACTIVE |
| RIRochester Industrial Control | Ontario | NY | Electrical Equipment, Appliance & Component Manufacturing335999 | 20-99 | ◐ LIKELY ACTIVE |
| SCSolvari CORP. | Ontario | CA | Miscellaneous Manufacturing339115 | — | ◐ LIKELY ACTIVE |
| SMSummit Machine, Inc. | Ontario | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| CTCole Tool & Die Company | Ontario | OH | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| EIEncore Image INC. | Ontario | CA | Printing and Related Support Activities323113 | 20-99 | ◐ LIKELY ACTIVE |
| PMPr Machine Works, INC. | Ontario | OH | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| ZWZb Wire Works INC | Ontario | CA | Machinery Manufacturing333924 | 20-99 | ◐ LIKELY ACTIVE |
| AAAlumin Art Plating CO INC | Ontario | CA | Fabricated Metal Product Manufacturing332812 | 1-19 | ◇ UNVERIFIED |
| 3T317707976 - Top Onions USA INC | Ontario | OR | Food Manufacturing311225 | 20-99 | ◐ LIKELY ACTIVE |
| AJAmerican Jerky Company LLC | Ontario | CA | Food Manufacturing311111 | — | ◐ LIKELY ACTIVE |
| ASArtesia Sawdust Products INC | Ontario | CA | Wood Product Manufacturing321999 | 1-19 | ◐ LIKELY ACTIVE |
| ABAspire Bakeries Ontario | Ontario | CA | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| 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 |
| FFFry Foods | Ontario | OR | Food Manufacturing311212 | — | ◐ 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 |
| PBPagliuso Brothers Slaughterhouse | Ontario | NY | Food Manufacturing311611 | — | ◐ 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 |
| OPOptimax Phase 3 | Ontario | NY | Machinery Manufacturing333310 | — | ◐ 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 |