| OTO'neill Tube & Reel INC | San Dimas | CA | — | ◇ UNVERIFIED |
| OSOne Source Printing and Graphics, INC. | Houston | TX | — | ◇ UNVERIFIED |
| OPOnesource Print Management Inc. | Lake Geneva | WI | — | ◇ UNVERIFIED |
| OSOne Stop Printing & Binding | Winnetka | CA | — | ◇ UNVERIFIED |
 Onetouchpoint Midwest CORP. | Green Bay | WI | — | ◇ UNVERIFIED |
| OTOne, Two, Three, INC. | Woodbury | NJ | — | ◇ UNVERIFIED |
| OLOn Line Graphics INC | Anaheim | CA | — | ◇ UNVERIFIED |
| OTOn Taps LTD. | Chicago | IL | — | ◇ UNVERIFIED |
| OTOn Target Printing and Graphics LLC | Fairfield | NJ | — | ◇ UNVERIFIED |
| ONOntario Neon CO INC | Ontario | CA | — | ◇ UNVERIFIED |
| OSOn-time Screen Printing & Embroidery, LLC | Derby | CT | — | ◇ UNVERIFIED |
| OTOn Time Signs | Fort Worth | TX | — | ◇ UNVERIFIED |
| OTOn Time Signs CORP. | Corona | NY | — | ◇ UNVERIFIED |
| OWOn Wings, INC. | Englewood | CO | — | ◇ UNVERIFIED |
| OHOpacity Holdings LLC | New York | NY | — | ◇ UNVERIFIED |
| OPOptimum Plastics INC. | Delaware | OH | — | ◇ UNVERIFIED |
 Orafol Americas INC | South Deerfield | MA | — | ◇ UNVERIFIED |
| Orafol Americas INC | South Deerfield | MA | — | ◇ UNVERIFIED |
| OBOrange Box Productions Dba Fastsigns of Torrance | Torrance | CA | — | ◇ UNVERIFIED |
| OCOrange Circle Studio CORP. | Oceanside | CA | — | ◇ UNVERIFIED |
| OCOrange CO Name Plate CO INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| OCOrange County Plant | Orange | TX | — | ◇ UNVERIFIED |
| OCOrange County Register Communications | Anaheim | CA | — | ◇ UNVERIFIED |
| OCOrbis Corporation | Bardstown | KY | — | ◇ UNVERIFIED |
| OROrbis Rpm, LLC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| OMOrb Media & Display Service | South Gate | CA | — | ◇ UNVERIFIED |
| OPOrca Printing | Memphis | TN | — | ◇ UNVERIFIED |
| OSOrde Sign and Graphics, INC | De Pere | WI | — | ◇ UNVERIFIED |
| OBOregon Basin - Polyacrylamide Plant (merit Energy Company) | Cody | WY | — | ◇ UNVERIFIED |
| OCOregon City Signs INC | Oregon City | OR | — | ◇ UNVERIFIED |
| OSOrenco Systems | Roseburg | OR | — | ◇ UNVERIFIED |
| OIOrientations INC Dba Designer Sign Systems | Minneapolis | MN | — | ◇ UNVERIFIED |
| OIOrkiStrate, Inc. | Allentown | PA | — | ◇ UNVERIFIED |
| OBormond beach printing llc | Ormond Beach | FL | — | ◇ UNVERIFIED |
| OVOrora Visual LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| OMO'Rourke Media Group LLC | Seaford | DE | — | ◇ UNVERIFIED |
| OAOrtiz Arts & Graphic Design LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| OAOstrowski Associates | San Jose | CA | — | ◇ UNVERIFIED |
| OEO'Tech East, LLC | Auburn | MA | — | ◇ UNVERIFIED |
| OLOTS Legacy Signs Inc | Fort Worth | TX | — | ◇ UNVERIFIED |
| OSOtto Screen Printing INC Tacoma | Tacoma | WA | — | ◇ UNVERIFIED |
| OROuter Rim Designs, LLC | Key Largo | FL | — | ◇ UNVERIFIED |
| OGOutform Group | Union City | CA | — | ◇ UNVERIFIED |
| OMOutfront Media INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| OMOutfront Media LLC | Stuart | FL | — | ◇ UNVERIFIED |
| OEOutside Edge, LLC. | Granville | OH | — | ◇ UNVERIFIED |
| OAOvergaard's Artcraft Printers, INC. | South Bend | IN | — | ◇ UNVERIFIED |
| OPOvernight Printing Seattle, INC. | Seattle | WA | — | ◇ UNVERIFIED |
| OPOvernight Printing Seattle, INC. | Seattle | WA | — | ◇ UNVERIFIED |
| OPOverwraps Packaging, L.p. | Dallas | TX | — | ◇ UNVERIFIED |
