| NBNova Brik Midamerica Llc-sikeston | Sikeston | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NANovus Ag LLC | Skidmore | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| OMOak Mill INC | St Joseph | MO | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| OIOcci INC. Wwtp | Fulton | MO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| OBOldcastle Buildingenvelope | Warrenton | MO | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| OGOldcastle Glass INC | Warrenton | MO | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| OHOld Hickory Shoppe LLC | Kahoka | MO | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| OMOld Monroe Elevator and Supply-old Monroe | Old Monroe | MO | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| OWOlin Winchester, LLC - White Flyer | Webb City | MO | Nonmetallic Mineral Product Manufacturing327123 | — | ◇ UNVERIFIED |
| OPOmega Protein Inc-omega Protein INC | St. Louis | MO | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| OFOpal Foods, LLC Neosho Feed Mill | Neosho | MO | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| OGOptima Graphics-fenton | Fenton | MO | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| OCOrchard Corporation | Chesterfield | MO | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| OOrica | Bonne Terre | MO | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| OOrizon | Fenton | MO | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| OOrtech | Kirksville | MO | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| OCOsage County Industries Inc-linn | Linn | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OCOsceola Concrete LLC | Osceola | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OPOsceola Products - Kennett Div | Kennett | MO | Food Manufacturing311223 | — | ◇ UNVERIFIED |
| OIO'sullivan Industries INC | Lamar | MO | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| OTOutput Technologies Graphics Resources-output Technologies Graphics Resources | Kansas City | MO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ODOzark Die Casting | Saint Clair | MO | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| OROzark Ready Mix | Eldon | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzark Ready Mix Company INC. | Linn Creek | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzark Ready Mix Company, INC. | Lebanon | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OROzark Ready Mix - Osage Beach | Osage Beach | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OSOzark Structures | Springfield | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| OWOzark Wire LTD INC | Malden | MO | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| OWOzark Wood | Salem | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| OWOzark Wood Products | Goodman | MO | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| PCPace Construction CO | Salem | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPace Construction CO - Central-moscow Mills | Moscow Mills | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPace Construction Co-danville Asphalt #1 | Montgomery | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPace Construction Co-pace Construction CO | St. Louis | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPace Construction CO - Warrenton Plant | Warrenton | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PIPace Industries Inc-monroe City | Monroe City | MO | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| PSPackage Service Company | Kansas City | MO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| PCPackaging Concepts Inc-packaging Concepts INC | St. Louis | MO | Paper Manufacturing322221 | — | ◇ UNVERIFIED |
| PLPacom Llc-farmington | Farmington | MO | Textile Mills313320 | — | ◇ UNVERIFIED |
| PIPaintco INC | St Louis | MO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PWPalmyra Water Plant | Palmyra | MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PHPar Health - Webster | St Louis | MO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| PHParker Hannifin | Slater | MO | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| PHParker Hannifin | Kennett | MO | Plastics and Rubber Products Manufacturing326220 | — | ◇ UNVERIFIED |
| PHParker Hannifin | Slater | MO | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Sporlan Valve Div Plant 1 | Washington | MO | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| PHParker Hannifin Sporlan Div - Plant #2 | Washington | MO | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| PMParkhurst Manufacturing | Sedalia | MO | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| PSPathfinder Systems INC | Kansas City | MO | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| PHPatriot Homes INC Heritage American Homes Div | Sikeston | MO | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
