| Carlsmed | California |
| Carlson Management Consulting | Massachusetts |
| Carlson Software | Kentucky |
| Carlson Wireless Technologies, Inc. | California |
| Carlton Technologies, Inc. | Michigan |
| Carlton-Bates | Arkansas |
| Carlyle Aviation Partners | Florida |
| Carma, Inc. | Colorado |
| Carmel Software Corporation | California |
| Carmichael Lynch | |
| Carmine Therapeutics, Inc. | Massachusetts |
| Carnation Software | Texas |
| Carnegie Learning | Pennsylvania |
| Carnegie Mellon University Center for Technology Transfer and Enterprise Creation | Pennsylvania |
| Carnegie Mellon University Electrical and Computer Engineering | Pennsylvania |
| Carnegie Mellon University Entertainment Technology Center | Pennsylvania |
| Carnegie Mellon University Human-Computer Interaction Institute | Pennsylvania |
| Carnegie Mellon University Information Networking Institute | Pennsylvania |
| Carnegie Mellon University Mathematical Sciences | Pennsylvania |
| Carnegie Mellon University School of Computer Science | Pennsylvania |
| Carnegie Mellon University Silicon Valley | California |
| Carnegie Mellon University Software and Societal Systems Department | Pennsylvania |
| Carnegie Mellon University Software Engineering Institute | Pennsylvania |
| Carnegie Mellon University Statistics & Data Science | Pennsylvania |
| Carnegie Mellon University The Robotics Institute | Pennsylvania |
| Carnegie Pharmaceuticals, LLC | |
| Carnegie Robotics | Pennsylvania |
| Carnegie Science | District of Columbia |
| Carnegie Science Center | |
| Carnera Technologies, Inc. | |
| Carnevale | |
| Carney | |
| Carney Direct Marketing | California |
| Carnomaly, LLC | |
| CaroGen Corporation | Connecticut |
| Carol H. Williams | |
| Carolina Advanced Digital, Inc. | North Carolina |
| Carolina Computer Partners | North Carolina |
| Carolina Custom Designs | |
| Carolina Digital Phone, Inc. | North Carolina |
| Carolina Fintech Hub | North Carolina |
| Carolina Molecular, Inc. | |
| Carolina Software As a Service, Inc. | South Carolina |
| Carolina University | North Carolina |
| Carolina Web Consultants | North Carolina |
| Carolina Web Design | North Carolina |
| Carolina Web Pro | North Carolina |
| Carolina West Wireless | North Carolina |
| CARON Scientific & Services, Inc. | |
| Carotechs, Inc. | Nevada |