| Keystone Memorials, INC GA | Manufacturing | 0 | - | F |
| Keystone Natural Holdings PA | Manufacturing | 0 | - | F |
| Keystone Peer Review Organization FL | - | 0 | - | - |
| Keystone Peer Review Organization (KEPRO) PA | - | 0 | - | - |
| Keystone Plastics NJ | Manufacturing | 0 | - | F |
| Keystone Potato Products LLC PA | Manufacturing | 0 | - | F |
| Keystone Powdered Metal Co COVID19 NC | - | 0 | - | - |
| Keystone Powdered Metal Company NC | Manufacturing | 0 | - | B |
| Keystone Powdered Metal Company PA | Manufacturing | 0 | - | F |
| Keystone Quality Transport Company DE | Transportation & Warehousing | 0 | - | F |
| Keystone Quality Transport Company PA | Transportation & Warehousing | 0 | - | D |
| Keystone Resort CO | - | 0 | - | - |
| Keystone Resort-Update CO | - | 0 | - | - |
| Keystone Rural Health Center PA | Healthcare & Social Assistance | 4 | - | - |
| Keystone RV Company IN | Manufacturing | 0 | - | D |
| Keystone RV Company OR | Manufacturing | 0 | - | F |
| Keystone RV Crossroads IN | Manufacturing | 0 | - | F |
| Keystone RV Dutchmen IN | Manufacturing | 0 | - | C |
| Keystone RV Oregon OR | Manufacturing | 0 | - | F |
| Keystone Stock Transfer LLC NY | Finance & Insurance | 1 | $150,000 | - |
| Keystone Strategy, LLC MA | Professional & Technical Services | 5 | $162,685 | - |
| Keystone Synergy, LLC TX | Manufacturing | 0 | - | F |
| Keystone Tailored Manufacturing, LLC OH | - | 0 | - | - |
| Keystone Technology Partners INC TX | Professional & Technical Services | 30 | $107,559 | - |
| Keystone Tower Systems, Inc. CO | Manufacturing | 1 | $134,400 | - |
| Keystone Villa at Ephrata PA | Healthcare & Social Assistance | 0 | - | F |
| Keystone Wood Specialties PA | Manufacturing | 0 | - | F |
| Keytronic AR | Manufacturing | 0 | - | F |
| KeyTronicEMS KY | - | 0 | - | - |
| Keyu Tech LLC CA | Professional & Technical Services | 1 | $132,579 | - |
| Keyval, Inc dba Keyes Honda CA | - | 0 | - | - |
| Keywell, L.L.C. NY | - | 0 | - | - |
| Keyword Studios / VMC Consulting Corporation WA | - | 0 | - | - |
| Keyword Studios US Inc. WA | - | 0 | - | - |
| KeywordFirst LLC IL | Professional & Technical Services | 1 | $90,000 | - |
| Keywords Studios PLC ND | - | 0 | - | - |
| KF Mechanical LLC NJ | Construction | 0 | - | F |
| KF Tea Massachusetts Inc. MA | Wholesale Trade | 1 | $87,901 | - |
| Kfa, LLP CA | Professional & Technical Services | 1 | $86,500 | - |
| KFC Corporation KY | Accommodation & Food Services | 4 | $130,237 | - |
| Kfc-Phx CO | - | 0 | - | - |
| KFG Operating 1 NY | Healthcare & Social Assistance | 0 | - | F |
| KFI Engineers PC MN | Professional & Technical Services | 1 | $106,454 | - |
| Kforce INC. FL | Administrative & Waste Services | 296 | $120,454 | A |
| Kg715 Inc, Upholstery Store NY | - | 0 | - | - |
| KGATE Technologies Inc TX | Professional & Technical Services | 20 | $108,879 | - |
| kgb Deals, Inc KS | - | 0 | - | - |
| kgb USA Inc. NC | - | 0 | - | - |
| kgb USA, Inc. KS | - | 0 | - | - |
| KGE Industries KS | Manufacturing | 0 | - | F |
