| OROlive Roots, LLC | Groveport | OH | — | ◇ UNVERIFIED |
| OMOlivers Metal Polishing LLC | Conway | SC | — | ◇ UNVERIFIED |
| OOOliver's Ornamental Iron, LLC | Flora | MS | — | ◇ UNVERIFIED |
| OMOlivet Machine Tool Engineering Company INC | Olivet | MI | — | ◇ UNVERIFIED |
| OPOlmsted Products CO. | Traverse City | MI | — | ◇ UNVERIFIED |
| ODOlsen & Durand Marine Service | Woodbridge | VA | — | ◇ UNVERIFIED |
| OTOlsen's Tool Grinding INC | South Gate | CA | — | ◇ UNVERIFIED |
| OBOlson Brothers CO | Plainville | CT | — | ◇ UNVERIFIED |
| OCOlson & Company Steel | Fresno | CA | — | ◇ UNVERIFIED |
| OIOlson Industries, INC. | Atkinson | NE | — | ◇ UNVERIFIED |
| OIOlson Iron & Stone Creations LLC | Elk River | MN | — | ◇ UNVERIFIED |
| OPOlson Precast Company | Henderson | NV | — | ◇ UNVERIFIED |
| OSOlson Steel | San Leandro | CA | — | ◇ UNVERIFIED |
| OCOlsson Construction, INC. | Perris | CA | — | ◇ UNVERIFIED |
| OCOlympia Chimney Supply, Incorporated | Scranton | PA | — | ◇ UNVERIFIED |
| OAOlympic Auto Center | Los Angeles | CA | — | ◇ UNVERIFIED |
| OCOlympic Coatings | Santa Ana | CA | — | ◇ UNVERIFIED |
| OTOlympic Trailer Manufacturing | Tumwater | WA | — | ◇ UNVERIFIED |
| OVOlympic Veterinary | Mercer Island | WA | — | ◇ UNVERIFIED |
| OWOlympic Wire and Equipment | Turlock | CA | — | ◇ UNVERIFIED |
| OTOlympus Technologies Incorporated | Eugene | OR | — | ◇ UNVERIFIED |
| OSOmaha Sign Group, Inc. | Omaha | NE | — | ◇ UNVERIFIED |
| OCOm Chicago Heights Oil INC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| OOmco | Talladega | AL | — | ◇ UNVERIFIED |
| OROmc Recreational Boat Group (51) | Cadillac | MI | — | ◇ UNVERIFIED |
| OSOmc Salt Water Engineering | Murfreesboro | TN | — | ◇ UNVERIFIED |
| OAOmega Autotech INC | Chicago | IL | — | ◇ UNVERIFIED |
| OCOmega Consolidated Corporation | Hilton | NY | — | ◇ UNVERIFIED |
| ODOmega Demolition | Elmwood Park | IL | — | ◇ UNVERIFIED |
| ODOmega Demolition CORP | Northlake | IL | — | ◇ UNVERIFIED |
| ODOmega Demolition CORP | Mundelein | IL | — | ◇ UNVERIFIED |
| OFOmega Firm INC Dba Half Face Blades | San Diego | CA | — | ◇ UNVERIFIED |
| OIOmega Iii LLC | Chicago | IL | — | ◇ UNVERIFIED |
| OMOmega Machine & Tool, INC. | Mentor | OH | — | ◇ UNVERIFIED |
| OSOmega Sign & Lighting Inc/yesco Chicago | Addison | IL | — | ◇ UNVERIFIED |
| OSOmega Steel Products, INC | Jemison | AL | — | ◇ UNVERIFIED |
| OTOmega Tool CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| OMO & M Fabricators, LLC | Pensacola | FL | — | ◇ UNVERIFIED |
| OIOmg INC | Agawam | MA | — | ◇ UNVERIFIED |
| OIOmg, INC. Dba Hickman Engineered Systems | Arden | NC | — | ◇ UNVERIFIED |
| OLOminous, LLC | Nampa | ID | — | ◇ UNVERIFIED |
| OCOmiotek Coil Spring CO | Lombard | IL | — | ◇ UNVERIFIED |
| OSOmi Specialty Products LLC | Fullerton | CA | — | ◇ UNVERIFIED |
| OMOm Machine & Tool LLC | Portland | OR | — | ◇ UNVERIFIED |
| OBOmni Bag, Inc. | Gallaway | TN | — | ◇ UNVERIFIED |
| OCOmni CORP Ii | Saint Augustine | FL | — | ◇ UNVERIFIED |
| OOmniduct | Everett | WA | — | ◇ UNVERIFIED |
| OAOmniduct Arlington | Arlington | WA | — | ◇ UNVERIFIED |
| OAOmniduct Az, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| OIOmni Industrial Services | Buffalo | WV | — | ◇ UNVERIFIED |
| OOmnimax | Gridley | IL | — | ◇ UNVERIFIED |
| OIOmnimax International, INC. | Ivyland | PA | — | ◇ UNVERIFIED |
| OIOmnimax International, LLC Dba Millennium Metals | Jacksonville | FL | — | ◇ UNVERIFIED |
| OMOmni Measurement Systems | Winooski | VT | — | ◇ UNVERIFIED |
| OPOmni Precision | Houston | TX | — | ◇ UNVERIFIED |
| OPOmni Precision, INC. | Houston | TX | — | ◇ UNVERIFIED |
 Omni Services | Falconer | NY | — | ◇ UNVERIFIED |
| OTOmni Technical Services INC | Saint Johns | MI | — | ◇ UNVERIFIED |
| OSOmnitech Systems Inc. | Valparaiso | IN | — | ◇ UNVERIFIED |
| OOOmron Oilfield & Marine Services | Houston | TX | — | ◇ UNVERIFIED |
| OROmron Robotics and Safety Technologies | Pleasanton | CA | — | ◇ UNVERIFIED |
| OAOnarga Academy - Nexus INC | Onarga | IL | — | ◇ UNVERIFIED |
| OFOnarga Fire Protection District | Onarga | IL | — | ◇ UNVERIFIED |
| OPOn-board Pmo, Corporation | Valley View | OH | — | ◇ UNVERIFIED |
| ODOn Demand Edm INC | Blaine | MN | — | ◇ UNVERIFIED |
| ODOn Display Signs, Inc. | Louisville | KY | — | ◇ UNVERIFIED |
| OMO'neal Manufacturing Services | Indianapolis | IN | — | ◇ UNVERIFIED |
| OMO'neal Manufacturing Services | Cedar Falls | IA | — | ◇ UNVERIFIED |
| ODOne Day Doors and Closets | Rocklin | CA | — | ◇ UNVERIFIED |
| ODOne Day Signs of Oregon INC | Bend | OR | — | ◇ UNVERIFIED |
| OEOne Edge, LLC | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| OEOne Ez Post LLC | Kingsport | TN | — | ◇ UNVERIFIED |
| OFOne Fat Frog, Incorporated | Orlando | FL | — | ◇ UNVERIFIED |
| OCOneida Casting Group | Oneida | NY | — | ◇ UNVERIFIED |
| OTOneida Tool Corporation | Redford | MI | — | ◇ UNVERIFIED |
| OIOne Industry Holdings, LLC | Joliet | IL | — | ◇ UNVERIFIED |
| OROne Rig Design LLC | Poland | ME | — | ◇ UNVERIFIED |
| OSOne Simple Company, LLC | Mesa | AZ | — | ◇ UNVERIFIED |
| ODOnesource Distributors LLC | San Diego | CA | — | ◇ UNVERIFIED |
| OHOnesource Hard Surfaces, LLC | Dalton | GA | — | ◇ UNVERIFIED |
| OSOne Source Tool Supply | Southampton | NY | — | ◇ UNVERIFIED |
| OSOne Stop | Chicago | IL | — | ◇ UNVERIFIED |
| OSOne Stop Auto Zone INC | Glendale | CA | — | ◇ UNVERIFIED |
| OMOneto Metal Products CORP | Sacramento | CA | — | ◇ UNVERIFIED |
| OTOne Ton Welding, Inc. | Panama | IA | — | ◇ UNVERIFIED |
| OWOne Way Industries INC | Madison Heights | MI | — | ◇ UNVERIFIED |
| OWOne Way Mfg | Santa Ana | CA | — | ◇ UNVERIFIED |
| OAOnex Automation | Duarte | CA | — | ◇ UNVERIFIED |
| OSOney Sheetmetal INC | Fort Myers | FL | — | ◇ UNVERIFIED |
| OFOnGuard Fence Systems, Ltd. | Moorestown | NJ | — | ◇ UNVERIFIED |
| OGOnly Grace INC | Wedowee | AL | — | ◇ UNVERIFIED |
| ONO. Norheim Corporation | Douglassville | PA | — | ◇ UNVERIFIED |
| OOOn Our Way, INC. | Sterling | VA | — | ◇ UNVERIFIED |
| OPOn Point Construction Services, INC. | Dover | FL | — | ◇ UNVERIFIED |
| OPOn Point Truck Sales LLC | Fontana | CA | — | ◇ UNVERIFIED |
| ONO & N Rotary Screen Engraving | Pico Rivera | CA | — | ◇ UNVERIFIED |
| OCOnsite Calibartion Service INC | Louisville | KY | — | ◇ UNVERIFIED |
| OCOn-site Custom Fabrication INC. | Hendersonville | TN | — | ◇ UNVERIFIED |
| OBOnslow Bay Marine Group, LLC | Hampstead | NC | — | ◇ UNVERIFIED |
| OSOn Spot Portable Machine CO INC | Livonia | MI | — | ◇ UNVERIFIED |
