| Carbon Media Group, LLC | Michigan |
| Carbon Medical Technologies, Inc. | |
| Carbon Robotics | Washington |
| Carbon Zero | Texas |
| Carbon, Inc. | California |
| Carbonated, Inc. | |
| CarbonBuit | California |
| CarbonCapture, Inc. | |
| CarbonLogic, Inc. | Colorado |
| Carbonmade | Illinois |
| Carbonology Interactive | Wyoming |
| CarbonZero | |
| Carbyne | New York |
| Carbyne Ltd | |
| Carching | |
| CaRD America, Inc. | Nevada |
| CARD Corporation | |
| Card Imaging | Illinois |
| Card Scanning Solutions, Inc. | California |
| Card Systems, Inc. | Florida |
| Carda Station | |
| Cardagraph, Inc. | |
| CardBoard | Indiana |
| Cardcom Tedchnology, Inc. | California |
| CardConnect | Pennsylvania |
| CardFlight | New York |
| Cardia, Inc. | Minnesota |
| Cardiac Insight, Inc. | Washington |
| Cardiff Oncology, Inc. | California |
| Cardina | New York |
| Cardinal Business Equipment Systems | Missouri |
| Cardinal Components, Inc. | Virginia |
| Cardinal Electronics, Inc. | Illinois |
| Cardinal Partners | New Jersey |
| Cardinal Tracking, Inc. | Texas |
| Cardinal Web Solutions | Georgia |
| CardinalCommerce | Ohio |
| Cardinality.ai | Maryland |
| Cardinote, Inc. | |
| Cardio Diagnostics, Inc. | Illinois |
| Cardio Flow, Inc. | Minnesota |
| CardioCommand, Inc. | |
| CardioDiagnostics Technologies, Inc. | California |
| CardioFocus | Massachusetts |
| Cardiomo Care | New York |
| Cardionomic, Inc. | Minnesota |
| CardioNXT, Inc. | Colorado |
| CardioPharma, Inc. | |
| CardioPharma, Inc. | |
| CardioRenal Systems, Inc. | |