| College of Staten Island Department of Computer Science | New York |
| College of Staten Island Department of Mathematics | New York |
| College of The Albemarle | North Carolina |
| College of the Atlantic | Maine |
| College of the Canyons | California |
| College of the Desert | California |
| College of the Florida Keys | Florida |
| College of the Holy Cross | Massachusetts |
| College of the Holy Cross Mathematics and Computer Science | Massachusetts |
| College of the Mainland | Texas |
| College of the Muscogee Nation | Oklahoma |
| College of the Ozarks | Missouri |
| College of the Redwoods | California |
| College of the Sequoias | California |
| College of the Siskiyous | California |
| College of Westchester | New York |
| College of Western Idaho | Idaho |
| College of William & Mary Mathematics | Virginia |
| College of Wooster | Ohio |
| College Recruiter, Inc. | |
| College Transitions | |
| CollegeMapper | Washington |
| CollegeNET | |
| CollegeNET, Inc. | Oregon |
| Collegenode | District of Columbia |
| CollegePlannerPro | California |
| CollegeStats | |
| Collegium Pharmaceutical | |
| Colleton Software | South Carolina |
| Collibra | New York |
| Collide | |
| Collide Capital | New York |
| Collimation, LLC | California |
| Collimator | California |
| Collin College | Texas |
| Collins Aerospace | |
| Collins Communications, Inc. | Wyoming |
| Collins Computing, Inc. | California |
| Collins Electro Optics, LLC | Colorado |
| Collins Software | Texas |
| Collonmade, Inc. | |
| Colloredo & Associates | |
| Colm Delaney | Washington |
| Colocation America | Nevada |
| ColoCrossing | New York |
| Cologix, Inc. | Colorado |
| ColoHouse | Florida |
| ColoInSeattle.com | Washington |
| Colonial Savings, F.A. | |
| Colony One On-Line, Inc. | Florida |