| NWNations Welding Service, INc. | Brookhaven | MS | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NDNew Dairy Alabama | Hattiesburg | MS | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| NWNew Way Trucks (wolverine) | Booneville | MS | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| NLNokomis, LLC | De Kalb | MS | Fabricated Metal Product Manufacturing332998 | — | ◇ UNVERIFIED |
| NMNortheast Metal Processors, INC. | Plantersville | MS | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| NMNovelty Machine Works | Jackson | MS | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| NANovipax Associate | Grenada | MS | Paper Manufacturing322219 | — | ◇ UNVERIFIED |
| NGNucor Grating - Fisher & Ludlow INC. | Madison | MS | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| NLNurturechi LLC | Ocean Springs | MS | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| OL* Oakland Logistics | Clinton | MS | Transportation Equipment Manufacturing336322 | — | ◇ UNVERIFIED |
| OIOdom Industries, Inc. | Waynesboro | MS | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| OLOkan, LLC | Jackson | MS | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| OCOlin Corporation Winchester Ammunition Division | Oxford | MS | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| OOOliver's Ornamental Iron, LLC | Flora | MS | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
 On Demand Pharmaceuticals, INC. | Tupelo | MS | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| OFOryo Farms, Inc DBA Yoder's Portable Buildings | Mize | MS | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| OSOxford Sand Company Inc, Pontotoc Plant | Ecru | MS | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PTPackswell Technologies, LLC | Ripley | MS | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| PFParhen Foundry, INC. | Amory | MS | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| PCParty Central LLC | Columbus | MS | Food Manufacturing311811 | — | ◇ UNVERIFIED |
 Patrick Industries Inc, Baymont Plant 2 | Belmont | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PPPatterson Pump Company | Olive Branch | MS | Machinery Manufacturing333914 | — | ◇ UNVERIFIED |
| PRPearl River Glass Studio INC. | Jackson | MS | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| PEPeavey Electronics, Plant Number 2 | Meridian | MS | Computer and Electronic Product Manufacturing334310 | — | ◇ UNVERIFIED |
| PHPennaco Hosiery | Grenada | MS | Apparel Manufacturing315111 | — | ◇ UNVERIFIED |
| PTPersonal Touch Stone | Moss Point | MS | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PPPharmacy Plus Infusion Services of Hattiesburg, INC. | Hattiesburg | MS | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PMPhiladelphia - Mississippi | Philadelphia | MS | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| PBPickens Brothers Lumber Company Inc, Flora | Flora | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| PTPines Trailer Division of Great Dane Limited Partnership | Greenville | MS | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| PUPk U.s.a. INC. | Senatobia | MS | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| PKPolar Kraft Manufacturing Company | Olive Branch | MS | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| PIPolychemie INC | Pearlington | MS | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| PFPolyester Fibers, LLC | Tupelo | MS | Textile Mills313230 | — | ◇ UNVERIFIED |
| PBPratt (mississippi Box), INC | Jackson | MS | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| PMPrecision Machine & Metal Fabrication, INC. | New Albany | MS | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| PMPrecision Machine & Metal Fabrication, INC. | Tupelo | MS | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PMPrecision Machining Services, INC. | Clinton | MS | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| PPPrecision Packaging Components LLC | Rienzi | MS | Miscellaneous Manufacturing339940 | — | ◇ UNVERIFIED |
| PWPrecision Woodcraft LLC | Magee | MS | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| PMPrecoat Mezzanine LLC Dba Precoat Metals | Jackson | MS | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PPPrestige Painting Belmont | Belmont | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PWProtex Weatherproofing | Pearl | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| QIQuad INC. | Ocean Springs | MS | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| QSQuality Steel | Cleveland | MS | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| QRQueen's Reward Meadery, LLC | Saltillo | MS | Beverage and Tobacco Product Manufacturing312130 | — | ◇ UNVERIFIED |
| RFRackMod Fitness LLC | Brandon | MS | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| RSRainbow Signs, INC. | Hattiesburg | MS | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| RSRainbow Signs, INC. | Brandon | MS | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| RHRedman Homes INC | Gulfport | MS | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
