| GWGlacier Woodworking, INC. | Kalispell | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| GCGlasgow Courier, INC. | Glasgow | MT | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GMG.O.A.T Meat Processing LLC | Hamilton | MT | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| GCGrain Craft - 013-0013 | Great Falls | MT | Food Manufacturing311211 | — | ◇ UNVERIFIED |
| GCGrain Craft - 111-0006 | Billings | MT | Food Manufacturing311211 | — | ◇ UNVERIFIED |
| GWGraymont Western U.s. INC. Indian Creek | Townsend | MT | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| GDGreen Duck Farms LLC | Livingston | MT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| GPGreenfield Printers, INC | Butte | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| GMGrotto Meats, LLC | Bozeman | MT | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| GAGt Advanced Technologies | Missoula | MT | Machinery Manufacturing333994 | — | ◇ UNVERIFIED |
| GPGull Printing & Signs | Polson | MT | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| HIHacienda Iron Craft | Stevensville | MT | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| HCHammen Corporation | Missoula | MT | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| HCHardrives Construction INC | Billings | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HRHattie Rex, LLC | Bozeman | MT | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| HSHawe Steel Design | Butte | MT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| HTHcl Truck & Equipment | Billings | MT | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| HTHcl Truck Equipment | Black Eagle | MT | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel | Helena | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HWHilltop Welding | Sidney | MT | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| HWHilltop Welding | Sidney | MT | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
 Idaho Forest Group- St. Regis | Saint Regis | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| IIIda, INC. | Heron | MT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| IGIndustrial Gas Distributors | Billings | MT | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| IPInnovative Postal Services | Great Falls | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| ILIntellimet LLC | Missoula | MT | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ITIntercontinental Truck Body, INC | Conrad | MT | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| IBIps Billings | Billings | MT | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| JCJ4k Corporation | Helena | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| JBJason Bohnsack | Columbia Falls | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| JJjj | Missoula | MT | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| JBJohnson Brothers Contracting | Eureka | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| JLJohnson Lumber Company | Eureka | MT | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| JMJohnson Metal Works LLC | Bozeman | MT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| JMJohnson Metal Works LLC | Bozeman | MT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| JCJore Corporation | Ronan | MT | Machinery Manufacturing333991 | — | ◇ UNVERIFIED |
| JCJore Corporation | Ronan | MT | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| JPJTech Precision Machining | Broadus | MT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| JGJtl Group INC. | Belgrade | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| JGJtl Group INC - 031-0001 | Bozeman | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JGJtl Group INC - Target Range | Missoula | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| KSK2 Stone (montana) LLC | Kalispell | MT | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| KKKagiyama Kitchens LLC | Saint Ignatius | MT | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| KTKalispell Truss Center, INC. | Kalispell | MT | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| KDKalmont Distributors INC | Kalispell | MT | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| KLKdna Life Sciences LLC | Belgrade | MT | Miscellaneous Manufacturing339114 | — | ◇ UNVERIFIED |
| KLKearney Logging & Sawmill | Eureka | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| KLKlingler Lumber | Kalispell | MT | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| KSKopi Shak Plus | Belgrade | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| KHKozba Holdings LLC | Billings | MT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
