| Kors Engineering | Michigan |
| Kortivity | Texas |
| Kortix AI Corporation | |
| Kortuc, Inc. | |
| KORU Medical Systems | New Jersey |
| Korvage, Inc. | |
| KORYAK Consulting, Inc. | Pennsylvania |
| Kosada, Inc. | Ohio |
| Kosmos Central | Oregon |
| Kosmos Way | |
| Koss Corporation | Wisconsin |
| Kott Software | Maryland |
| Koutif Therapeutics, LLC | |
| Kovair Software, Inc. | California |
| Kovak-Likly Communications, Inc. | |
| Kove | Illinois |
| Koverly | Massachusetts |
| Kovina Therapeutics, Inc. | |
| Kow Abundant | |
| Kowa Pharmaceuticals America, Inc. | |
| Koya Medical | California |
| Kozee Labs, Inc. | Arizona |
| Kozlo, Inc. | |
| KPI Integrated Solutions | Missouri |
| KPI Partners | California |
| KPI Sense | |
| KPI Software, Inc. | Delaware |
| KPItarget | |
| KPMG Consulting, LLC | California |
| KPS Life | |
| KPS3 | Nevada |
| KPU Telecommunications | Alaska |
| KR Electronics, Inc. | Kansas |
| Kraft & Kennedy, Inc. | New York |
| Kraft Technology Group, LLC | Tennessee |
| Kraft TeleRobotics, Inc. | Kansas |
| Kraftek, Inc. | Pennsylvania |
| Kraftful | California |
| Kraka | California |
| Kraken Robotics, Inc. | |
| Kraken Ventures | California |
| Kramerica Industries, LLC | New York |
| Krasamo, Inc. | Texas |
| Krate | New York |
| Kratos Defense & Security Solutions, Inc. | California |
| Krave Branding, LLC | |
| Krave Marketing, LLC | |
| Kreative Dezign Studio | Massachusetts |
| Kreative Komputing by Kevin and Kathy, LLC | Pennsylvania |
| Kreative Web Works, Inc. | California |