 Penco Products INC | Vicksburg | MS | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| PSPharmedium Services LLC | Cleveland | MS | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PLPhilips Lighting, Tupelo Operations | Tupelo | MS | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| PBPhillips Bark Processing Company Inc, Processing Facility | Brookhaven | MS | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| PWPicayune Wood Treating Site | Picayune | MS | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| PCPike County Ready Mix Concrete | Magnolia | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PBPine Belt Ready Mix Concrete INC | Laurel | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PBPine Belt Ready Mix, Glendale Avenue Plant | Hattiesburg | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PTPines Trailer Division of Great Dane LP | Greenville | MS | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| PIPiper Impact Inc, New Albany Highway 15 | New Albany | MS | Fabricated Metal Product Manufacturing332112 | — | ◇ UNVERIFIED |
| P1Plant 1 | Winona | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PGPort Gibson Veneer LLC | Port Gibson | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| PBPrecision Blades, INC. | Saltillo | MS | Fabricated Metal Product Manufacturing332213 | 20-99 | ◇ UNVERIFIED |
| PPPrecision Packaging INC | Jackson | MS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PFPremier Foam LLC | New Albany | MS | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| PFPrestage Farms Mississippi Inc, Feed Mill | West Point | MS | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| PFPrice Fibers Inc, Meridian Chip Mill | Meridian | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| PEPursue Energy Corporation - Thomasville Plant | Brandon | MS | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| QGQuad Graphics Printing Corporation | Corinth | MS | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| QMQuality Manufacturing Group | Columbia | MS | Fabricated Metal Product Manufacturing332114 | — | ◇ UNVERIFIED |
| QPQuebecor Printing Olive Branch, INC. | Olive Branch | MS | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| QCQuikrete Companies Inc, The, Picayune 2 | Picayune | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RCRainbow Creations INC | Ridgeland | MS | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| RMRam Machine Tooling INC | Picayune | MS | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RQRays Quality Meats | Petal | MS | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| RMRb Manufacturing LLC | Brandon | MS | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| REReichhold Environmental Response Trust | Gulfport | MS | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RIReman INC | Polkville | MS | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| RRRemy Reman, LLC | Taylorsville | MS | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| RRRemy Reman,l.l.c.(formerly A&b Grp.dalex | Bay Springs | MS | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| RRRemy Reman Llc, Raleigh Plant | Raleigh | MS | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| RMRichardson Molding INC | Philadelphia | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| RHRiverside Hardwoods, LLC | Fulton | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| RARives and Reynolds Lumber Company Inc, Louisville Sawmill | Louisville | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| RARives and Reynolds Lumber Company, Kosciusko Sawmill | Kosciusko | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| RKR K Metals LLC | Tupelo | MS | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| RGRogers Group Inc, Ripley Asphalt | Ripley | MS | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RLRollcon Llc, Onsite Plant | Clinton | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RFRoseburg Forest Products South Lp, Louisville Facility | Louisville | MS | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| RFRoseburg Forest Products South Lp, Oxford Facility | Oxford | MS | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| RFRosedale Fabricators LLC | Rosedale | MS | Furniture and Related Product Manufacturing337124 | — | ◇ UNVERIFIED |
| RHRose Hill Company INC | Okolona | MS | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| RFRoss Forest Products, Dixie Pine Road Facility | Hattiesburg | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| RIRoura Iron Works INC | Holly Springs | MS | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RMRoura Material Handling INC | Holly Springs | MS | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| RTRouse Tire Fire | Vicksburg | MS | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| SPSanderson Plumbing Products, INC. | Columbus | MS | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| SMSchaffner Manufacturing Company INC | Jackson | MS | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| SLSeago Lumber Company | Mccomb | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| SLService Lumber Company | Rolling Fork | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
