| Oregon Canadian Forest Products OR | Manufacturing | 0 | - | F |
| Oregon Coast Community Action OR | Healthcare & Social Assistance | 0 | - | F |
| Oregon Conference of Seventh-day Adventists OR | Other Services | 1 | $54,960 | - |
| Oregon Dairy PA | Retail Trade | 0 | - | A |
| Oregon Department of Forestry OR | Agriculture & Forestry | 0 | - | B |
| Oregon Department of Human Services OR | Healthcare & Social Assistance | 0 | - | A |
| Oregon Department of Transportation OR | Public Administration | 0 | - | C |
| Oregon Employment Department OR | Public Administration | 0 | - | A |
| Oregon Health & Science University OR | Educational Services | 67 | $149,135 | C |
| Oregon Health & Science University (OHSU) OR | - | 0 | - | - |
| Oregon Health And Science University OR | Educational Services | 54 | $97,385 | - |
| Oregon Health and Science Unviersity OR | Educational Services | 1 | $240,178 | - |
| Oregon Healthcare, LLC MO | Healthcare & Social Assistance | 0 | - | F |
| Oregon Ice Cream LLC OR | Manufacturing | 0 | - | F |
| Oregon Industrial Lumber Products OR | Manufacturing | 0 | - | F |
| Oregon Institute of Technology OR | Educational Services | 7 | $72,000 | - |
| Oregon Military Dept OR | Public Administration | 0 | - | C |
| Oregon Museum of Science and Industry OR | Arts & Entertainment | 0 | - | A |
| Oregon Mutual OR | - | 0 | - | - |
| Oregon Mutual Insurance Company OR | Finance & Insurance | 2 | $111,134 | - |
| Oregon Oncology Specialists OR | Healthcare & Social Assistance | 0 | - | B |
| Oregon Oncology Specialists, LLP OR | - | 2 | $500,000 | - |
| Oregon Potato Company OR | Manufacturing | 0 | - | F |
| Oregon Potato Company WA | Manufacturing | 1 | $250,000 | F |
| Oregon Spice Company OR | Manufacturing | 0 | - | F |
| Oregon Staff Company LLC OR | Administrative & Waste Services | 0 | - | F |
| Oregon State Hospital-Oregon Health Authority OR | Healthcare & Social Assistance | 0 | - | F |
| Oregon State University OR | Educational Services | 152 | $66,672 | C |
| Oregon Tool, Inc OR | Manufacturing | 4 | $144,518 | F |
| Oregon Tool, Inc. IL | Transportation & Warehousing | 0 | - | A |
| Oregon Tool, Inc. MO | Manufacturing | 0 | - | F |
| Oregon Truss Co Inc OR | Manufacturing | 0 | - | D |
| Oregon Youth Authority OR | Public Administration | 0 | - | F |
| OREI Advisors LP CA | - | 1 | $180,000 | - |
| OReilly Technology Services, Inc. MO | Retail Trade | 4 | $135,776 | - |
| Oremda Infotech INC. MN | Professional & Technical Services | 6 | $88,675 | - |
| Oremda Infotech INC. TX | Professional & Technical Services | 2 | $94,765 | - |
| Oremor of Glendale LLC, dba Toyota of Glendale CA | - | 0 | - | - |
| Oremor of Temecula LLC dba Temecula Valley Toyota/Scion CA | - | 0 | - | - |
| Oremor of Tustin Inc. dba Tustin Toyota CA | - | 0 | - | - |
| Oremor of Woodland Hills LLC, dba Lexus of Woodland Hills CA | - | 0 | - | - |
| Orenco Systems, Inc. OR | Manufacturing | 0 | - | F |
| Orenco Systems, Ind OR | Manufacturing | 0 | - | F |
| Orens Brothers Real Estate INC PA | Construction | 0 | - | F |
| Orentreich Foundation for the Advancement of Science, Inc. NY | Professional & Technical Services | 1 | $115,000 | - |
| OrePac Holding Company AZ | Wholesale Trade | 0 | - | F |
| OrePac Holding Company CA | Wholesale Trade | 0 | - | F |
| OrePac Holding Company CO | Wholesale Trade | 0 | - | F |
| OrePac Holding Company ID | Wholesale Trade | 0 | - | F |
| OrePac Holding Company MT | Wholesale Trade | 0 | - | F |
