| ChoiceSpine | Tennessee |
| Chomp, Inc. | |
| Chondrex, Inc. | |
| Choose Energy, Inc. | |
| Choose Us Marketing Agency | |
| Choosing A Great New Computer | Wisconsin |
| Choozle, Inc. | Colorado |
| ChopDawg Studios, Inc. | Pennsylvania |
| Choptank Agency | |
| Chord | New York |
| Chord Commerce, Inc. | |
| Chortek, LLP | Wisconsin |
| Chorus | California |
| Chorus Call, Inc. | Pennsylvania |
| Choung Networks | California |
| Chowan University | North Carolina |
| ChowNow | California |
| CHR Solutions | Texas |
| Chrea Studio | Wyoming |
| ChRi Laboratories | Minnesota |
| Chris Casarez | California |
| Chris Castle, Inc. | Minnesota |
| Chris D. Computer Services | Nevada |
| Chris Downs Computerroom | Maine |
| Chris Hardie | Indiana |
| Chris Makara | |
| Chris Muzilla | Massachusetts |
| Chris Scott & Associates | Kentucky |
| Chrisman & Company | |
| Christendom College | Virginia |
| Christensen Computer Company, Inc. | Arizona |
| Christian Brothers University | Tennessee |
| Christian J. Steinmetz | |
| Christian Webhost | Ohio |
| Christiana Spine Center | |
| ChristianSteven Software | North Carolina |
| ChristianWorldHosting.com, Inc. | Idaho |
| Christie Digital Systems USA, Inc. | California |
| Christine Arthur Design Group | California |
| Christine M. Kleinert Institute for Hand and Microsurgery | |
| Christman Consulting | |
| Christoper Merrill Web Design | Illinois |
| Christopher Bermudez | |
| Christopher Boey New York | New York |
| Christopher G. Mendla | Pennsylvania |
| Christopher Green Design | |
| Christopher J. Dolan | Wisconsin |
| Christopher JC | |
| Christopher Newport University Department of Mathematics | Virginia |
| Christopher Newport University School of Engineering and Computing | Virginia |