- Bronxnet
- Brookdable University Hospital & Medical Center
- Brookdale Univerisity Hospital and Medical Center
- Brookhaven Memorial Hospital Medical Center
- Brookhaven Orthopedics
- Brooklyn Borough President's Office
- Brooks TLC - Hospital System - Dunkirk
- Brooks TLC - Hospital System - Irving
- Buffalo City School District
- Buffalo General Medical Center
- Buffalo State College
- Buffalo VA Medical Center
- Builders Exchange, Inc.
- Bush Industries, Inc
- Canisius College
- Canton Potsdam Hospital
- Carmelite Sisters for the Aged and Infirm
- Cathedral of St. John the Divine
- Catholic Charities Archdiocese of New York
- Catholic Diocese of Buffalo
- Catholic Health System
- Catskill Regional Medical Center
- Cattaraugus County
- Cayuga Medical Center
- Center for Donation and Transplant
- Chase Bank
- Chenango County Chamber of Commerce
- Church World Service
- CitiGroup Health Services
- City College of New York
- City of Buffalo
- City of Niagara Falls
- Clarence Central School District
- Claxton-Hepburn Medical Center
- Clifton Springs Hospital and Clinic
- Clifton-Fine Hospital
- Clinical Marketing Consortium
- CMI Communications
- Cobleskill Regional Hospital
- Coca-Cola Bottling Co of NY
- Cohen Children's Hospital Northwell Health
- College of Mount Saint Vincent
- Columbia Memorial Health
- Columbia University School of Nursing
- Community Board 8
- Community Parent Center
- Computer Associates International
- ConnectLife
- Contemporary Long Term Care of New York
- Convene, The Journal of the Professional Convention