| NHNunes Holdings, LLC | Boise | ID | — | ◇ UNVERIFIED |
| OIOakcalpax INC | Marshall | MN | — | ◇ UNVERIFIED |
| OIOakcalpax INC | Marshall | MN | — | ◇ UNVERIFIED |
| OIOakday, Inc. | Miamisburg | OH | — | ◇ UNVERIFIED |
| OGOak Grove Printing | San Jose | CA | — | ◇ UNVERIFIED |
| OHOak Hill Print & Graphics, LLC | Hagerstown | MD | — | ◇ UNVERIFIED |
| OTOberthur Technologies | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| OHOBJF Holdings, LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| OIOcpc INC | Irvine | CA | — | ◇ UNVERIFIED |
| OPO'dell Printing | Rohnert Park | CA | — | ◇ UNVERIFIED |
| OPO'econ Print INC. | Topeka | KS | — | ◇ UNVERIFIED |
| OPOffco-offset Printing CO | Fairfield | CA | — | ◇ UNVERIFIED |
| OOOffice of State Publishing | West Sacramento | CA | — | ◇ UNVERIFIED |
| OPOjai Printing & Publishing CO. | Ojai | CA | — | ◇ UNVERIFIED |
| OEOkumus Enterprises, LTD. Dba Star Label Products | Fairless Hills | PA | — | ◇ UNVERIFIED |
| OMOlan Mills, INC. Amnicola Hwy Plant | Chattanooga | TN | — | ◇ UNVERIFIED |
| OSOld Stage Printing | Surgoinsville | TN | — | ◇ UNVERIFIED |
| OPOlson Printing INC | Nashville | TN | — | ◇ UNVERIFIED |
| OPOlympak Printing & Packaging | Grand Rapids | MN | — | ◇ UNVERIFIED |
| OGOlympus Group Orlando CO | Orlando | FL | — | ◇ UNVERIFIED |
| OFOme9a Franchises LLC | Ontario | OH | — | ◇ UNVERIFIED |
| OPOmega Printing | Palo Alto | CA | — | ◇ UNVERIFIED |
| OSOmnova Solutions INC. | Monroe | NC | — | ◇ UNVERIFIED |
| ODOn Demand 3d Technology, INC. | Tustin | CA | — | ◇ UNVERIFIED |
| OAOne Accord Corporation Dba Postageone | Valencia | CA | — | ◇ UNVERIFIED |
| OPOneida Printing (former) | Green Bay | WI | — | ◇ UNVERIFIED |
| ODOneil Data Systems INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| OPOneil Printing | Phoenix | AZ | — | ◇ 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 and Finishing | Orange | CA | — | ◇ UNVERIFIED |
| OLOn Line Graphics INC | Anaheim | CA | — | ◇ UNVERIFIED |
| OTOn Target Printing and Graphics LLC | Fairfield | NJ | — | ◇ UNVERIFIED |
| OSOn-time Screen Printing & Embroidery, LLC | Derby | CT | — | ◇ UNVERIFIED |
| OHOpacity Holdings LLC | New York | NY | — | ◇ UNVERIFIED |
 Opsec Security/lancaster | Lancaster | PA | — | ◇ UNVERIFIED |
| OCOrange Circle Studio CORP. | Oceanside | CA | — | ◇ UNVERIFIED |
| OCOrange County Register Communications | Anaheim | CA | — | ◇ UNVERIFIED |
| OMOrb Media & Display Service | South Gate | CA | — | ◇ UNVERIFIED |
| OPOrca Printing | Memphis | TN | — | ◇ UNVERIFIED |
| OIOrkiStrate, Inc. | Allentown | PA | — | ◇ UNVERIFIED |
| OBormond beach printing llc | Ormond Beach | FL | — | ◇ UNVERIFIED |
| OVOrora Visual LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| OVOrora Visual LLC | Niles | IL | — | ◇ UNVERIFIED |
| OMO'Rourke Media Group LLC | Seaford | DE | — | ◇ UNVERIFIED |
| OAOrtiz Arts & Graphic Design LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| OAOstrowski Associates | San Jose | CA | — | ◇ UNVERIFIED |
