- K. F. Davis Engineering Inc.
- K. N. M. Industries, Inc. [DBA Lexco Cable]
- K. Parks Consulting, Inc.
- K&M Tax & Accounting Services LLC
- K&S Helicopters, Inc.
- K3 Solutions LLC
- Ka’ala Systems Technology Corporation
- Kaizen Approach, Inc.
- KAO Distribution LLC
- Kastling, LLC
- Kayou Global Consulting, LLC
- Kayto Express Logistics LLC
- KCK Technologies, LLC
- KD Distributing, L.L.C.
- Keeler Solutions, LLC
- KEF Consulting LLC
- Keizer-Morris International, Inc.
- Kenner Technologies, LLC
- Keo and Associates, Inc
- Key & Associates, P.C.
- Key Management Partners, Inc.
- Key Resources, Inc.
- Keystone Advisors, LLC
- KeyToLife Professional Services, LLC
- Keyuniversal Inc.
- Kidstuff Playsystems, Inc.
- Kimaris LLC
- KimberlyCarter-Com LLC
- Kimi’s
- Kinetic Data, Inc.
- Kinetic Technologies LLC
- Kingdomware Technologies, Inc.
- KirkpatrickCORE LLC
- Kitware Inc
- Kluge Design Inc.
- KNK Tax and Accounting Services, Inc.
- KnowledgeBank, Inc.
- KNS Industrial Supply
- Kollabio, Inc.
- Konan LLC
- KOO design-build, inc.
- Kopis, LLC [Trener International]
- Kozi Solutions, LLC
- KP Soft, Inc.
- Kre8iv Gifts LLC
- Kreative Kontent Co
- Kriaanet Inc.
- Kristal Eley LLC
- KRX Cleaning Services, LLC
- KTD Plus, LLC
- KW Associates LLC [DBA Ampere Scientific]
- KW Productions