| KLE Construction MT | Construction | 0 | — | A |
| Klean Kanteen, Inc. CA | Wholesale Trade | 0 | — | B |
| Klearview Manor ME | Healthcare & Social Assistance | 0 | — | F |
| Klebs Mechanical Inc AK | Construction | 0 | — | A |
| Klecka Electric Co., Inc. TX | Construction | 0 | — | F |
| KLECKER FARMS, INCORPORATED CO | Agriculture & Forestry | 0 | — | A |
| Kleeberg Inc MA | Construction | 0 | — | D |
| Kleeberg Mechanical Services MA | Construction | 0 | — | D |
| Kleeberg Sheetmetal MA | Manufacturing | 0 | — | F |
| Kleeberger Contracting Services OH | — | 0 | — | — |
| Kleen Air Service Corporation IL | Administrative & Waste Services | 0 | — | F |
| Kleen Energy Systems LLC CT | Utilities | 0 | — | A |
| KLEEN HARVEST CA | Agriculture & Forestry | 0 | — | F |
| Kleen Logistics Services LLC GA | Transportation & Warehousing | 0 | — | A |
| Kleen Rite MO | Manufacturing | 0 | — | A |
| Kleen Test Products WI | Manufacturing | 0 | — | B |
| Kleen-Tech Services, LLC CO | Administrative & Waste Services | 0 | — | F |
| Kleenco Maintenance & Construction, Inc. IN | Construction | 0 | — | F |
| Kleenmark WI | Administrative & Waste Services | 0 | — | C |
| Kleentech Inc Valdese NC | Manufacturing | 0 | — | F |
| Kleentech Inc. NC | Other Services | 0 | — | F |
| KleenTech York PA | Manufacturing | 0 | — | A |
| Kleer Fax, Inc. NY | — | 0 | — | — |
| Kleet Lumber NY | Retail Trade | 0 | — | B |
| Kleiber Construction, Inc. WI | Construction | 0 | — | A |
| Klein Cabinets And Interiors Inc MI | Construction | 0 | — | A |
| Klein Contracting GA | Construction | 0 | — | F |
| Klein Cutlery NY | Manufacturing | 0 | — | F |
| Klein Foods Inc. dba Rodney Strong Wine Estates CA | Manufacturing | 0 | — | F |
| Klein Management & Research, Inc IA | Agriculture & Forestry | 0 | — | A |
| Klein Marine Systems, Inc. NH | Manufacturing | 0 | — | F |
| Klein Products TX | Manufacturing | 0 | — | F |
| Klein Tools IA | — | 0 | — | — |
| Klein Tools IL | Manufacturing | 0 | — | F |
| Klein Tools Fort SMITH AR | Manufacturing | 0 | — | A |
| Klein Tools, Inc AR | Manufacturing | 0 | — | A |
| Klein Tools, Inc. TX | Manufacturing | 0 | — | C |
| Klein Transportation PA | Transportation & Warehousing | 0 | — | D |
| Klein's ShopRite of Maryland MD | Retail Trade | 0 | — | A |
| Klein-Dickert Milwaukee, Inc. WI | Construction | 0 | — | D |
| KleinBank 2019 MN | — | 0 | — | — |
| KLEINBERG, KAPLAN, WOLFF AND COHEN, P.C. NY | Professional & Technical Services | 2 | $155,000 | — |
| Kleinfeld Bridal Corp. NY | — | 0 | — | — |
| Kleinfelder PA | — | 0 | — | — |
| Kleinfelder, Inc. CA | Professional & Technical Services | 27 | $82,317 | B |
| Kleinpeter Farms Dairy, L.L.C. LA | Manufacturing | 0 | — | F |
| Kleis Construction, Inc. IN | Construction | 0 | — | A |
| Klem Tractor Inc. MA | Retail Trade | 0 | — | C |
| Klement's Sausage Co. WI | Manufacturing | 0 | — | F |
| Klenzoid, Inc PA | Manufacturing | 0 | — | D |
