| HAHon Allsteel - Tupelo Plant | Verona | MS | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| HPHood Packaging Corporation | Yazoo | MS | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| HFHouston Foam Fabricators INC | Houston | MS | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| HIHoward Industries, INC. Ellisville Substation Facility | Ellisville | MS | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| HIHowse Implement Company, Inc, Howse Implement Company Waste Tire Processing Faci | Laurel | MS | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| HPHuey P Stockstill LLC | Gulfport | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Asphalt Plant No. 4 | Wiggins | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P Stockstill Llc, Picayune | Picayune | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HPHuey P. Stockstill Llc, Ready Mix Concrete #2 | Poplarville | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HCHydro Carbide INC | Gulfport | MS | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
| IPI-220 Plant | Jackson | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IFIdeal Foam Llc, Pontotoc Facility | Pontotoc | MS | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| IFIndependent Furniture Supply Company, INC. - Plant Number 6 | Sherman | MS | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| IHIndian Head Inc, Ttt Products | Ripley | MS | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| ISIngalls Shipbuilding, Gulfport Operations | Gulfport | MS | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| ICInternational Cold Storage, Rainey Road LLC | Olive Branch | MS | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| ICInternational Converter | Iuka | MS | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| IPInternational Paper Company, Moss Point | Moss Point | MS | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| IPInternational Paper, Morton Lumber Mill | Morton | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| IPInternational Paper, Natchez Mill | Natchez | MS | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| IPInternational Paper, Richland | Richland | MS | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| IPIso Panels INC | Richland | MS | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| IPItw Paslode | Cleveland | MS | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| JKJack King Asphalt Company | Oxford | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JEJaxon Energy Processing Plant | Jackson | MS | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| JFJesco Fabrication Shop | Tupelo | MS | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel INC | Greenwood | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel Inc, Eupora | Eupora | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel Inc, Inverness | Inverness | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JJJ J Ferguson Sand and Gravel Inc, Winona | Winona | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
 Johns Manville | Natchez | MS | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| Johns Manville Corporation | Richland | MS | Textile Mills313230 | — | ◇ UNVERIFIED |
| JTJohnston Tombigbee Furniture, Columbus 2 | Columbus | MS | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| JSJonathan S Burns Enterprises Llc, Caledonia Ready Mix | Steens | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| JLJones Lumber Company INC | Sandy Hook | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| JLJones Lumber Company Inc, Hazlehurst Yard | Hazlehurst | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| KCKerr-mcgee Chemical Corporation | Columbus | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| KIKior INC | Columbus | MS | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| KBKitchens Brothers Manufacturing CO | Hazlehurst | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| KFKoch Foods of Mississippi-prepared,distribution,& Wastewater | Morton | MS | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| KIKoppers INC (grenada Ms) | Tie Plant | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
 Krueger International Inc, Tupelo | Tupelo | MS | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| Krueger International Inc, Winona | Winona | MS | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| LVLafayette Venetian Blind INC | Ridgeland | MS | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| LCLamar Concrete INC | Purvis | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LMLaurel Machine & Foundry Hawkes Plant | Laurel | MS | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| LELeading Edge Aviation Services, INC. | Greenville | MS | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| LRLeaf River Forest Products, LLC | New Augusta | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| LPLees Pig Skin Company | Newhebron | MS | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| LRLehman Roberts Company | Grenada | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
