| Crimson Phoenix | |
| Crimson Tech | Alabama |
| Criner-Daniels & Associates, Inc. | |
| CRiskCo | |
| CRISP Education & Research, LLC | |
| Crisp Technologies, LLC | |
| Crispin Corporation | North Carolina |
| CRISPR QC | California |
| CRISPR QC, Inc. | |
| CRISPR Therapeutics | |
| Cristallight Software | Washington |
| Cristcot | |
| Cristek Interconnects, Inc. | California |
| Criswell College | Texas |
| CriTech Research, Inc. | Michigan |
| Criterion 508 Solutions, Inc. | Iowa |
| Criterion, Inc. | Connecticut |
| Criterium, Inc. | New York |
| Critical Alert Systems | Florida |
| Critical Data Solutions | |
| Critical Fit | Georgia |
| Critical Hub Networks | Puerto Rico |
| Critical Logic | California |
| Critical Mass Web Design | Missouri |
| Critical Mention, Inc. | New York |
| Critical Project Services, LLC | Tennessee |
| Critical Resource Technology | Florida |
| Critical Software | |
| Critical Tools, Inc. | Texas |
| CriticalRiver, Inc. | California |
| Critigen | Washington |
| CritiTech | Kansas |
| CRM Dialer | Wyoming |
| CRMA, LLC | |
| CRMBuyer | California |
| CRMPlus Consulting | Florida |
| CRMPRO | California |
| CRN | New York |
| CroakignToad.com | Virginia |
| Crocker Communications, Inc. | Massachusetts |
| Crocker Ventures | Utah |
| Crocoapps | |
| Crocodile Digital | Texas |
| Crocodile Games | Indiana |
| Crocus Technology | California |
| Croem, Inc. | Florida |
| Croissant, Inc. | New York |
| Crombie | |
| Cromos Pharma | |
| Crompton Systems Corporation | Rhode Island |