| HWHk Willow Creek | Idaho Falls | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HMHoku Materials Site | Pocatello | ID | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| IIIbp Incorporated | Kuna | ID | Food Manufacturing311611 | — | ◇ UNVERIFIED |
 Idahoan Foods Dubois | Dubois | ID | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| Idahoan Foods Idaho Falls Plant | Idaho Falls | ID | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company | Boise | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Site | Caldwell | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Eagle | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IMIdaho Milk Products | Jerome | ID | Food Manufacturing311514 | — | ◇ UNVERIFIED |
| IVIdaho Veneer | Post Falls | ID | Wood Product Manufacturing321212 | — | ◇ UNVERIFIED |
| IMIdapine Mill, LLC | Meridian | ID | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| IRIneel Research Center | Idaho Falls | ID | Transportation Equipment Manufacturing336992 | — | ◇ UNVERIFIED |
| IMIntegrow Malt LLC | Idaho Falls | ID | Food Manufacturing311213 | — | ◇ UNVERIFIED |
| ISIntermountain Sign Safety | Rathdrum | ID | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| IGInterstage Group | Nampa | ID | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt | Sandpoint | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Coeur Dalene Facility | Coeur D Alene | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Freeman Pit Batch Plant | Post Falls | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt Sandpoint | Sandpoint | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Cda | Coeur D Alene | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Post Falls | Post Falls | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Wyoming | Rathdrum | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JFJackson's Food Store #022 | Middleton | ID | Machinery Manufacturing333913 | — | ◇ UNVERIFIED |
| JDJ D Heiskell and Company | Gooding | ID | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| JDJ D Heiskell and Company | Wendell | ID | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| JRJerome Redi-mix | Jerome | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| JMJk Merrill and Sons Tank Farm Rd | Pocatello | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JTJohnson Thermal Systems | Caldwell | ID | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| JMJoslyn Manufacturing CO LLC | Sandpoint | ID | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| JRJ R Simplot Caldwell | Caldwell | ID | Food Manufacturing311411 | — | ◇ UNVERIFIED |
| KCKerr-mcgee Chemical Soda Springs Site | Soda Springs | ID | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Mountain West - Cascade | Cascade | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| KDKnown Distribution | Meridian | ID | Beverage and Tobacco Product Manufacturing312230 | — | ◇ UNVERIFIED |
 Lippert Components Plant 084 | Nampa | ID | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| LHLjd Holdings Dba B & D Foods | Boise | ID | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| LILynn Industrial Coatings | Garden City | ID | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MFMaddens Facility | Caldwell | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MRMaddens Ready Mix | Caldwell | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMaverik Country Store 209 | Mountain Home | ID | Machinery Manufacturing333913 | — | ◇ UNVERIFIED |
| MSMaverik Store 271 | Mccall | ID | Machinery Manufacturing333913 | — | ◇ UNVERIFIED |
| MSMaverik Store #273 (3-140651) | Nampa | ID | Machinery Manufacturing333913 | — | ◇ UNVERIFIED |
| MBMerritt Brothers Lumber | Athol | ID | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| MCMickelsen Construction-asphalt Sales | Pocatello | ID | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| M1Micro 100 Tool CORP | Meridian | ID | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| MMMicron Mask Technology Center | Boise | ID | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MTMirage Trailers LLC | Nampa | ID | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| MCMobile Concrete of Idaho | Boise | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCMobile Concrete of Idaho 00544 | Meridian | ID | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MLMolex LLC | Caldwell | ID | Electrical Equipment, Appliance & Component Manufacturing335921 | — | ◇ UNVERIFIED |
| MWMountain West Bark | Rexburg | ID | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
