| National Center for Tobacco-Free Older Persons | National Center for Toxicological Research | National Center for Traditional Arts | National Center for Transgender Equality | National Center for Transit Research |
| National Center for Transportation and Industrial Productivity | National Center for Urban School Transformation | National Center for Water Quality Research | National Center for Women and Information Technology | National Center for Women and Retirement Research |
| National Center for Women Development | National Center for Women & Policing | National Center for Youth Issues | National Center for Youth Law | National Center for Youth with Disabilities |
| National Center for Zoonotic, Vector-Borne, and Enteric Diseases | National Center of Afro-American Artists | National Center of Continuing Education | National Center of Environmental Publications and Information | National Center of Excellence |
| National Center of Excellence for First Responder Technologies | National Center of Excellence for Metals Recycle | National Center of Health Informatics | National Center of Hygiene, Medical Ecology and Nutrition | National Center of Independents and Peasants |
| National Center of Infectious and Parasitic Diseases | National Center of Laser Technology | National Center of Medical Devices Reporting | National Center of Neurology and Psychiatry | National Center of Public Health |
| National Center of Public Health Protection | National Center of Radiobiology and Radiation Protection | National Center of the Haitian Apostolate | National Center on Accessing the General Curriculum | National Center on Addiction and Substance Abuse |
| National Center on Addiction and Substance Abuse at Columbia University | National Center on Adult Learning | National Center on Adult Literacy | National Center on Birth Defects and Developmental Disabilities | National Center on Caregiving |
| National Center on Child Abuse and Neglect | National Center on Child Fatality Review | National Center on Deafness | National Center on Disability and Access to Education | National Center on Disability and Journalism |
| National Center on Domestic and Sexual Violence | National Center on Educational Media and Materials for the Handicapped | National Center on Educational Outcomes | National Center on Educational Restructuring and Inclusion | National Center on Education and the Economy |
| National Center on Education, Disability and Juvenile Justice | National Center on Elder Abuse | National Center on Family Homelessness | National Center On Fathers and Families | National Center on Full Faith and Credit |
| National Center on Immigrant Integration Policy | National Center on Institutions and Alternatives | National Center on Low-Incidence Disabilities | National Center on Minority Health and Health Disparities | National Center on Nonprofit Enterprise |
| National Center on Outcomes Research | National Center on Physical Activity and Disability | National Center on Postsecondary Teaching, Learning and Assessment | National Center on Radiation Protection | National Center on Research in Vocational Education |
| National Center on Rural Aging | National Center on Secondary Education | National Center on Secondary Education and Transition | National Center on Senior Transportation | National Center on Service Obligations |
| National Center on Sexual Behavior of Youth | National Center on Sexual Exploitation | National Center on Shaken Baby Syndrome | National Center on Sleep Disorders Research | National Center on Social Entrepreneurs |
| National Center on Special Education Accountability Monitoring | National Center on Student Progress Monitoring | National Center on Substance Abuse and Child Welfare | National Center on Time & Learning | National Center on Women and Aging |
| National Center on Workforce and Disability | National Center on Youth Transition | National Centers for Career and Technical Education | National Centers for Coastal Ocean Science | National Centers for Environmental Information |
| National Centers for Environmental Prediction/National Center for Atmospheric Research | National Centers for Environmental Prediction - Optimum Interpolation | National Centers for Risk Analysis | National Center to Encourage Judaism | National Center to Improve Practice |
| National Center to Improve the Tools of Educators | National Center To Prevent Handgun Violence | National Central Bureau | National Centre for Biotechnology Education | National Centre for Children's Literature |
| National Centre for Clinical Audit | National Centre for Crop Forecasting | National Centre for Development Cooperation | National Centre for Education and Training on Addiction | National Centre for Engineering in Agriculture |
| National Centre for Health Statistics and World Health Organisation | National Centre for Jute Diversification | National Centre for Radio Astrophysics | National Centre of Radiobiology and Radiation Protection | National Centre Party of Nigeria |
| National Century Financial Enterprises, Inc. | National Certificate in Education | National Certification Board for Anticoagulation Providers | National Certification Board for Diabetes Educators | National Certification Board of Occupational Therapists |
| National Certification Board of Pediatric Nurse Practitioners and Nurses | National Certification Commission for Acupuncture and Oriental Medicine | National Certification Commission in Chemistry and Chemical Engineering | National Certification Corporation for the Obstetric, Gynecologic and Neonatal Nursing Specialties | National Certification Council |
| National Certification Program for Construction Code Inspectors | National Certified Addiction Counselor | National Certified Career Counselor | National Certified Counselor | National Certified Gerontological Counselor |
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