| BCBayou Concrete Llc, Firetower Road Plant | Pass Christian | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBayou Concrete Llc, Ocean Springs | Ocean Springs | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBayou Concrete Llc, Port Bienville | Pearlington | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BLBazor Lumber Company LLC | Quitman | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| BIBekaert INC | Clarksdale | MS | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| BFBelmont Fiberglass INC | Belmont | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BRBenchcraft, Ripley Facilities | Ripley | MS | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| BGBerry Global | Hattiesburg | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BEBest Equipment Technologies INC | Poplarville | MS | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| BIBfel Indemnitor Inc, Potter Production Facility | Wesson | MS | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| BBBig Bee Metal Manufacturing Company INC | Tremont | MS | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| BEBlacklidge Emulsions INC | Gulfport | MS | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| BSBlain Sand and Gravel Inc, Crystal Springs Bailey Road | Crystal Springs | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BFBluefire Fulton Renewable Energy LLC | Fulton | MS | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| BSBlue Springs Division of B and B Concrete Company INC | Blue Springs | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BPBond Paving Company Inc, Gulfport | Gulfport | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BBBoral Bricks INC | Macon | MS | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| BSBrandsafway Solutions Llc, Moss Point | Moss Point | MS | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BCBrinkmann Corporation, the | Olive Branch | MS | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
 Brintons US Axminster INC | Greenville | MS | Textile Product Mills314110 | — | ◇ UNVERIFIED |
| BIBritton Industries, LLC | Eupora | MS | Furniture and Related Product Manufacturing337000 | — | ◇ UNVERIFIED |
| BCBrookhaven Chip Mill | Bogue Chitto | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| BFBrookwood Furniture Company Inc, Bruce | Bruce | MS | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| BMBuilder's Marble, INC. | Jackson | MS | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| BNBunge North America, Incorporated | Marks | MS | Food Manufacturing311222 | — | ◇ UNVERIFIED |
| BPBurrows Paper Corporation | Pickens | MS | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| CVCam2 Vicksburg Lube Oil Blending Plant | Vicksburg | MS | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| CICana INC | North Carrollton | MS | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CMCappaert Manufactured Housing, Cappaert Rubbish Landfill | Vicksburg | MS | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
| CCCareys Construction Company INC | Jackson | MS | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CFCavenham Forest Industries, LLC | Gulfport | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| CBCeco Building Systems | Columbus | MS | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| CSCentral Supply and Ready Mix | Philadelphia | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CGCertainteed Gypsum & Ceiling Manufacturing, INC. | Meridian | MS | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| CHChapel Hill Port Bienville LLC | Bay Saint Louis | MS | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| C3Chapter 3 INC | Houlka | MS | Furniture and Related Product Manufacturing337121 | 20-99 | ◇ UNVERIFIED |
| CDCharles Donald Pulpwood Inc, Russum Woodyard | Port Gibson | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| CFChromcraft Furniture | Senatobia | MS | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| CCCoast Concrete LLC | Biloxi | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CSComet Street Llc, Formerly Southland Oil Company | Yazoo City | MS | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| CCComponent Concepts INC | Laurel | MS | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| CBComposite Building Systems INC | Paden | MS | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| CIConfish INC | Belzoni | MS | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| CCContinental Carbonic Products, INC. | Brookhaven | MS | Beverage and Tobacco Product Manufacturing312113 | — | ◇ UNVERIFIED |
| CMCooper Marine & Timberlands Corporation | Dennis | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| CRCorbin Russwin INC | Clarksdale | MS | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| CCCordova Concrete INC | Olive Branch | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCordova Concrete Inc, Plant 6 | Southaven | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CSCovalence Specialty Materials, LLC | Meridian | MS | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| CACrg Acquisition LLC | West Point | MS | Food Manufacturing311611 | — | ◇ UNVERIFIED |
