Schools
- College of the Mainland
- College of the Marshall Islands
- College of the Ozarks
- College of the Redwoods
- College of the Sequoias
- College of the Siskiyous
- College of Visual Arts
- College of Western Idaho
- College of William and Mary
- College of Wilmington
- Collin County Community College District
- Collins College
- Collins School of Cosmetology
- Colorado Christian University
- Colorado College
- Colorado Heights University
- Colorado Mountain College
- Colorado Northwestern Community College
- Colorado School of Healing Arts
- Colorado School of Mines
- Colorado School of Trades
- Colorado School of Traditional Chinese Medicine
- Colorado State University
- Colorado State University System Office
- Colorado State University-Global Campus
- Colorado State University-Pueblo
- Colorado Technical University
- Colorado Technical University Online
- Columbia Area Vocational Technical School
- Columbia Basin College
- Columbia Centro Universitario
- Columbia College
- Columbia College Chicago
- Columbia College Hollywood
- Columbia Gorge Community College
- Columbia International University
- Columbia Southern University
- Columbia State Community College
- Columbia Theological Seminary
- Columbia University in the City of New York
- Columbia-Greene Community College
- Columbiana County Career and Technical Center
- Columbus College of Art and Design
- Columbus State Community College
- Columbus State University
- Columbus Technical College
- Commercial Diving Academy
- Commonwealth Institute of Funeral Service
- Commonwealth Technical Institute
- Community Based Education and Development DBA CBD College
- Community Care College
- Community Christian College
- Community College of Allegheny County
- Community College of Aurora
- Community College of Beaver County
- Community College of Denver
- Community College of Philadelphia
- Community College of Rhode Island
- Community College of the Air Force
- Community College of Vermont
- Community Hospital School of Nursing
- Community Services Division-Alliance City
- Community Technology Learning Center of Portage
- Compass Career College
- Compu-Med Vocational Careers Corp
- Computer Career Center
- Computer Labs
- Computer Savvy
- Computer Systems Institute
- Computer Technologies Program
- Computer Tutor Business and Technical Institute
- Concept College of Cosmetology
- Conception Seminary College
- Concord Law School
- Concord University
- Concorde Career College
- Concordia College at Moorhead
- Concordia College-New York
- Concordia College-Selma
- Concordia Seminary
- Concordia Theological Seminary
- Concordia University
- Concordia University - Portland
- Concordia University Texas
- Concordia University-Ann Arbor
- Concordia University-Saint Paul
- Concordia University-Wisconsin
- Conemaugh Valley Memorial Hospital
- Conlee's College of Cosmetology
- Connecticut Center for Massage Therapy-Newington
- Connecticut College
- Connecticut Institute of Hair Design
- Connecticut Training Centers Inc
- Conservatory of Recording Arts and Sciences
- Consolidated School of Business
- Construction Craft Academy
- Contemporary Dental Assisting
- Continental Academie of Hair Design
- Continental School of Beauty Culture
- Contra Costa Community College District Office