| Cellular Vehicles, Inc. | |
| CellularOne | Arizona |
| Cellulora | |
| Celluphone, LLC | California |
| Cellutionware Software, LLC | California |
| CellVax Therapeutics | |
| CellVax Therapeutics | |
| Cellvie, Inc. | Texas |
| Cellworks Life | California |
| Celmatix, Inc. | New York |
| Celogics | |
| Celona, Inc. | |
| Celprogen, Inc. | California |
| Celt Media | Pennsylvania |
| Celtic Communications | Florida |
| CelticBlue Technologies | Minnesota |
| CelticQA Solutions | |
| Celtis Ventures | |
| Celularity, Inc. | New Jersey |
| Cemah Creative, LLC | |
| CEMax.ai | Ohio |
| CENDYN | Florida |
| Cenetric, Inc. | Kansas |
| CenExel Clinical Research | Utah |
| Cenfluence | Florida |
| Cenna Biosciences, Inc. | California |
| Cennox, Inc. | Montana |
| Censia | California |
| Censinet | Massachusetts |
| Censius, Inc. | Texas |
| Census | California |
| Censys | Michigan |
| Censys Technologies | Florida |
| Centage Corporation | Massachusetts |
| Centah, Inc. | Florida |
| Centari | |
| Centaris | Michigan |
| Centaur Digital Marketing PH, Inc. | |
| Centaur Interactive | |
| Centaur Labs | Massachusetts |
| Centaur Systems, Inc. | Illinois |
| Centaur Systems, Inc. | |
| Centauri Health Solutions, Inc. | Arizona |
| Centech Solutions, LLC | Connecticut |
| Centenary College of Louisiana | Louisiana |
| Centenary University | New Jersey |
| Centennia Software | Rhode Island |
| Centennial Arts | |
| Centent Company | California |
| Center 10 Consulting | |