| CLC L Dews and Sons Foundry and Machinery Company INC | Hattiesburg | MS | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| MMMagnolia Metal & Plastic Products, INC | Vicksburg | MS | Plastics and Rubber Products Manufacturing326199 | 1-19 | ◐ LIKELY ACTIVE |
| ECEsco Corporation - Newton | Newton | MS | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| GTGolden Triangle Mill Service | Columbus | MS | Nonmetallic Mineral Product Manufacturing327992 | 100-499 | ◐ LIKELY ACTIVE |
| MCMueller Casting and Copper Tube Products | Fulton | MS | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| NSNucor Steel Jackson INC | Flowood | MS | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| PTPlymouth Tube Company | Eupora | MS | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| RNRolls-royce Naval Marine INC | Pascagoula | MS | Primary Metal Manufacturing331529 | — | ◐ LIKELY ACTIVE |
| SCSouthwire Company | Starkville | MS | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| WCWorthington Cylinders Mississippi LLC | New Albany | MS | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| AMAbb Motors and Mechanical INC | Columbus | MS | Primary Metal Manufacturing331522 | — | ◐ LIKELY ACTIVE |
| ADAluminum Dynamics - Columbus | Columbus | MS | Primary Metal Manufacturing331313 | 500+ | ◐ LIKELY ACTIVE |
| ASAttala Steel Industries LLC | Kosciusko | MS | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| CRCf Rail Services Llc, Mississippi Railcar | Meridian | MS | Primary Metal Manufacturing331111 | — | ◐ LIKELY ACTIVE |
| GMGrenada Manufacturing LLC | Grenada | MS | Primary Metal Manufacturing331221 | — | ◐ LIKELY ACTIVE |
| LMLaurel Machine and Foundry, Front Street | Laurel | MS | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| MSMississippi Silicon | Burnsville | MS | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| OHOwls Head Alloys | West Point | MS | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| PTPlymouth Tube Company- Eupora | Eupora | MS | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| TETaber Extrusions, LLC | Gulfport | MS | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| ATAlter Trading Corporation - Sardis | Sardis | MS | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| CLCroft LLC | Magnolia | MS | Primary Metal Manufacturing331312 | — | ◐ LIKELY ACTIVE |
| CFCrystal Finishing Systems INC | Senatobia | MS | Primary Metal Manufacturing331316 | — | ◐ LIKELY ACTIVE |
| MPMetaline Products INC | Crystal Springs | MS | Primary Metal Manufacturing331315 | — | ◐ LIKELY ACTIVE |
| AWArc-up Welding, INC | Vicksburg | MS | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| JTJindal Tubular USA llc | BayStlouis | MS | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| LMLaurel Machine and Foundry, Hawkes Circle | Laurel | MS | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| MMMisa Metal Processing Forest, Mississippi | Forest | MS | Primary Metal Manufacturing331221 | 1-19 | ◐ LIKELY ACTIVE |
| MCMueller Copper Tube Company | Fulton | MS | Primary Metal Manufacturing331420 | 500+ | ◐ LIKELY ACTIVE |
| MCMuller Copper Line Sets | Fulton | MS | Primary Metal Manufacturing331410 | 100-499 | ◐ LIKELY ACTIVE |
| PMPT- Mississippi Investment Castings | Columbus | MS | Primary Metal Manufacturing331512 | 20-99 | ◐ LIKELY ACTIVE |
| RFRoll Form | Iuka | MS | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| SPStarkville Plant | Starkville | MS | Primary Metal Manufacturing331420 | 100-499 | ◐ LIKELY ACTIVE |
| SDSteel Dynamics, Inc. - Flat Roll Group - Columbus | Columbus | MS | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| WWalnut | Walnut | MS | Primary Metal Manufacturing331318 | 100-499 | ◐ LIKELY ACTIVE |
| WEWeir Esco Newton | Newton | MS | Primary Metal Manufacturing331513 | 100-499 | ◐ LIKELY ACTIVE |
| SMSpecialty Metals Supply INC | Jackson | MS | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |