| Kopp Construction Company OR | Construction | 0 | — | F |
| Kopp Glass, Inc. PA | Manufacturing | 0 | — | F |
| Kopper Glo Mining, LLC TN | — | 0 | — | — |
| Koppers AL | Manufacturing | 0 | — | C |
| Koppers NC | Manufacturing | 0 | — | B |
| Koppers SC | Manufacturing | 0 | — | F |
| Koppers TN | Manufacturing | 0 | — | A |
| Koppers VA | Manufacturing | 0 | — | B |
| Koppers Domino TX | Manufacturing | 0 | — | F |
| Koppers Florence SC | Manufacturing | 0 | — | C |
| Koppers Galesburg IL | Manufacturing | 0 | — | C |
| Koppers Guthrie KY | Manufacturing | 0 | — | F |
| Koppers Hubbell MI | Manufacturing | 0 | — | B |
| Koppers Huntington WV | Manufacturing | 0 | — | F |
| Koppers Inc GA | Manufacturing | 0 | — | F |
| Koppers Inc. PA | Wholesale Trade | 2 | $138,907 | A |
| Koppers KRS Field Services WI | Construction | 0 | — | B |
| Koppers Millington Operations TN | Manufacturing | 0 | — | A |
| Koppers Millington Transportation TN | Transportation & Warehousing | 0 | — | C |
| Koppers North Little Rock AR | Manufacturing | 0 | — | F |
| Koppers Roanoke VA | Manufacturing | 0 | — | F |
| Koppers Rock Hill SC | Manufacturing | 0 | — | A |
| Koppers Somerville TX | Manufacturing | 0 | — | F |
| Koppers Stickney IL | Manufacturing | 0 | — | D |
| Koppers Susquehanna PA | Manufacturing | 0 | — | B |
| Koppers, Inc. WV | — | 0 | — | — |
| Koppl Pipeline Services Inc. CA | Construction | 0 | — | A |
| Kopplow Construction Company, Inc. TX | Construction | 0 | — | F |
| Koppy's Propane PA | Wholesale Trade | 0 | — | F |
| Kopykake Enterprises CA | Manufacturing | 0 | — | F |
| Kor Hotel Management, LLC dba Viceroy CA | — | 0 | — | — |
| Kor Windows LLC UT | Manufacturing | 1 | $76,960 | — |
| Kor-Chem Inc. GA | Manufacturing | 0 | — | A |
| Korber Pharma Inc ND | Manufacturing | 0 | — | D |
| Korber Pharma Inc. NC | Manufacturing | 0 | — | C |
| Korcomptenz Inc NJ | Professional & Technical Services | 3 | $90,210 | — |
| KORD TX | Transportation & Warehousing | 0 | — | A |
| KORD Fire Protection CA | Construction | 0 | — | F |
| Kordsa Inc NC | Manufacturing | 0 | — | B |
| Kordsa Inc TN | — | 0 | — | — |
| Kordsa Inc, TN | Manufacturing | 0 | — | B |
| Kore Mart, Ltd. PA | Manufacturing | 0 | — | D |
| Kore.ai, Inc. FL | Information & Media | 1 | $160,000 | — |
| Korea Investment Partners US, Inc. CA | Finance & Insurance | 1 | $94,926 | — |
| Korea Plaza, Inc. d/b/a Assi Plaza NY | — | 0 | — | — |
| Korean Air Lines Co., Ltd CA | — | 0 | — | — |
| Korean American Family Services, Inc. CA | Healthcare & Social Assistance | 5 | $51,730 | — |
| Korean Community Service Center of Greater Washington, Inc. VA | Other Services | 1 | $65,192 | — |
| KOREAN COMMUNITY SERVICES OF METROPOLITAN NEW YORK, INC. NY | Healthcare & Social Assistance | 1 | $91,270 | — |
| Korean Women's Association WA | Healthcare & Social Assistance | 0 | — | F |
