| O.C. Tanner Recognition Company UT | - | 1 | $300,000 | - |
| O.E. Wheel Distributors LLC FL | - | 1 | $100,000 | - |
| O.E.C. Shipping Los Angeles, Inc. CA | Professional & Technical Services | 2 | $63,000 | - |
| O.E.S. Equipment, LLC TX | Real Estate | 1 | $98,509 | - |
| O.M.G Entertainment CA | Professional & Technical Services | 2 | $74,880 | - |
| O.P.E.N. America, Inc. dba: OpenWorks AZ | - | 0 | - | - |
| O.P.H Laguna Hills, Inc. dba The Original Pancake House CA | - | 0 | - | - |
| O.P.H. - R.B., Inc., The Original Pancake House CA | - | 0 | - | - |
| O.P.I. Products Inc. CA | - | 0 | - | - |
| O.R. Builders Inc. CA | Construction | 0 | - | F |
| O.S. Kelly Company OH | Manufacturing | 0 | - | F |
| O.W. Lee Co., Inc. CA | - | 0 | - | - |
| O.W. Lee, Inc. TX | Manufacturing | 0 | - | F |
| O1 Communications, Inc. CA | - | 0 | - | - |
| O2 Technologies INC CA | Professional & Technical Services | 10 | $99,500 | - |
| O2M Technologies, LLC IL | Healthcare & Social Assistance | 1 | $69,576 | - |
| O3 Technology Solutions LLC NJ | Professional & Technical Services | 40 | $102,898 | - |
| O3 Technology Solutions, LLC NY | Professional & Technical Services | 2 | $92,248 | - |
| O3b Networks USA, LLC VA | Professional & Technical Services | 1 | $121,040 | - |
| o9 Solutions, Inc. TX | Professional & Technical Services | 61 | $147,512 | - |
| OA Logistics CA | - | 0 | - | - |
| OA Logistics GA | - | 0 | - | - |
| Oa Valley Hospital District CA | Healthcare & Social Assistance | 0 | - | F |
| Oacaa & Opae OH | - | 0 | - | - |
| Oak and Iron Fitness NC | Arts & Entertainment | 1 | $38,500 | - |
| Oak Beverages, Inc. (Warehouse) NY | - | 0 | - | - |
| Oak Creek Homes TX | Manufacturing | 0 | - | F |
| Oak Crest Academy LLC CA | - | 2 | $80,109 | - |
| Oak Farms Dallas West TX | - | 0 | - | - |
| Oak Forest Management, LLC TX | Construction | 1 | $74,152 | - |
| Oak Forest Realty MA | - | 1 | $90,230 | - |
| Oak Forest Realty, LLC MA | Real Estate | 2 | $80,080 | - |
| Oak Grove Institute Foundation, Inc. CA | Healthcare & Social Assistance | 0 | - | A |
| Oak Grove Racing Gaming & Hotel KY | Arts & Entertainment | 0 | - | A |
| Oak Grove School District CA | Educational Services | 6 | $66,630 | - |
| Oak Hammock at the University of Florida, Inc. FL | Healthcare & Social Assistance | 0 | - | F |
| Oak Harbor Freight Lines CA | Transportation & Warehousing | 0 | - | F |
| Oak Harbor Freight Lines NV | Transportation & Warehousing | 0 | - | D |
| Oak Harbor Freight Lines OR | Transportation & Warehousing | 0 | - | F |
| Oak Harbor Freight Lines WA | Transportation & Warehousing | 0 | - | F |
| Oak Health Care Investors of North Carolina, INC NC | Healthcare & Social Assistance | 0 | - | F |
| Oak Health Care Investors of Richmond, Virginia, INC VA | Healthcare & Social Assistance | 0 | - | F |
| Oak Hill CT | Healthcare & Social Assistance | 0 | - | F |
| Oak Hill Advisors, LP NY | Finance & Insurance | 6 | $200,000 | - |
| Oak Hill Capital Management LLC CT | Finance & Insurance | 1 | $150,000 | - |
| Oak Hill Country Club NY | Arts & Entertainment | 0 | - | F |
| Oak Hill Manor Nursing Home NY | Healthcare & Social Assistance | 0 | - | - |
| Oak Hills Nursing & Rehab Center OH | Healthcare & Social Assistance | 0 | - | F |
| Oak Leaf Engineering CORP. NJ | Professional & Technical Services | 1 | $49,920 | - |
| Oak Orchard Community Health Center, Inc. NY | - | 2 | $160,000 | - |
