- National Federation of Independent Business
- National Federation of Independent Business, Marketing Department NFIB)
- National Fire Protection Association
- National Fluid Power Association
- National Football League Players Association Atlanta
- National Fuel Gas Co.
- National Ground Water Association
- National Guard Bureau - Counterdrug Programs
- National Health Care For the Homeless Council
- National Highway Traffic Safety Agency
- National Hispanic Council on Aging
- National Housing Endowment
- National Indian Council on Aging, Inc.
- National Institute of Corrections
- National Institutes of Health
- National Insurance Association
- National Jewish Health
- National Juneteenth Observation Foundation
- National Kidney Foundation
- National Kidney Foundation of Arizona
- National Kidney Foundation of East TN
- National Kidney Foundation of Georgia
- National Kidney Foundation of Greater New York
- National Kidney Foundation of Hawaii
- National Kidney Foundation of Illinois, Inc.
- National Kidney Foundation of Kentucky
- National Kidney Foundation of KS and WMO
- National Kidney Foundation of Michigan
- National Kidney Foundation of Nebraska
- National Kidney Foundation of South and Central Texas
- National Kidney Foundation of the Virginias
- National Kidney Foundation of Utah
- National Kidney Foundation of Wisconsin
- National Kitchen and Bath Association
- National League for Nursing
- National Louis University
- National Marfan Foundation
- National Marrow Donor Program
- National Medical Association
- National Microrentals
- National Military Family Association
- National Mining Association
- National Minority Organ Tissue Transplant Education Program MOTTEP)
- National Newspaper Association
- National Optometric Association
- National Organization for Transplant Enlightenment N.O.T.E.)
- National Organization of Black County Officials
- National Park Medical Center
- National Park Service, MTC
- National Pawn Brokers Association