| CattlePro | Kentucky |
| Cattlesoft, Inc. | Texas |
| CATUG Biotechnology | |
| Catwired.com | California |
| Caucho Technology, Inc. | California |
| Causal, Inc. | |
| Causeway Therapeutics, Inc. | |
| Cavallo Agency | |
| Cavalry | Colorado |
| Cave Consulting Group, Inc. | California |
| Cave Social | |
| Cavecreek | Arizona |
| Cavela | |
| Caveman Labs, LLC | |
| Cavendish Kinetics, Inc. | California |
| CaveNet, LLC | Oregon |
| Caviar | |
| Cavintek, Inc. | California |
| Cavion | Virginia |
| Cavli, Inc. | California |
| Cavrnus, Inc. | California |
| Cawley Digital ID | Wisconsin |
| Caxiam Group, Inc. | Florida |
| CAXTEK, Inc. | |
| Caxy Interactive | Illinois |
| Caydu | California |
| Cayenne Consulting, LLC | California |
| Caylent | |
| Cayman Chemical | Michigan |
| Cayman Technologies, Inc. | Ohio |
| Cayosoft, Inc. | |
| Cayuga Biotech, Inc. | |
| Cayuse | Oregon |
| Cazarin Interactive | Minnesota |
| Cazbah | New York |
| Cazcom, Inc. | California |
| Cazena, Inc. | Massachusetts |
| CB Insights | New York |
| CB Therapeutics | |
| CB4 | California |
| CBCC Global Research | California |
| CBI | Michigan |
| CBI Systems Ltd | Texas |
| cBizSoft, Inc. | Texas |
| CBM of America, Inc. | Florida |
| CBM Technology | Louisiana |
| CBNITS | |
| Cboe Exchange, Inc. | |
| CBOsoft, LLC | Wyoming |
| CBR Technology Corporation | California |