| Abbreviations | Meaning |
 | NCIC CTG / GEC DE L'INCC | National Cancer Institute Of Canada Clinical Trials Group / Groupe Des Essais Cliniques De L'Institut National Du Cancer Du Canada |
 | NCIPC | National Center For Injury Prevention And Control |
 | NCIRD | National Center For Immunization And Respiratory Diseases |
 | NCLAS | National Centre For Laboratory Animal Sciences |
 | NCLE | National Contact Lens Examiners |
 | NCLEHA | National Conference Of Local Environmental Health Administrators |
 | NCLEX | National Council Licensure Examination |
 | NCLF | National Children's Leukemia Foundation |
 | NCLN | North Carolina League For Nursing |
 | NCMHCE | National Clinical Mental Health Counseling Examination |
 | NCMHD | National Center On Minority Health And Health Disparities |
 | NCMHJJ | National Center For Mental Health And Juvenile Justice |
 | NCMIR | National Center For Microscopy And Imaging Research |
 | NCMN | National Case Management Network Of Canada. Réseau National Des Gestionnaires De Cas Du Canada |
 | NCNA | North Carolina Nurses Association |
 | NCNMLG | Northern California And Nevada Medical Group |
 | NCNP | National Conference For Nurse Practitioners & Acute Care Clinicians |
 | NCOA | National Council On Aging |
 | NCP | Nutrition In Clinical Practice [periodical] |
 | NCPA | National Community Pharmacists Association |
 | NCPAD | National Center On Physical Activity And Disability |
 | NCPC | National Council For Palliative Care |
 | NCPDCID | National Center For Preparedness, Detection, And Control Of Infectious Diseases |
 | NCPDP | National Council For Prescription Drug Programs |
 | NCPIE | National Council On Patient Information And Education |
 | NCPS | National Center For Patient Safety |
 | NCPTSD | National Center For Post-Traumatic Stress Disorder |
 | NCQA | National Committee For Quality Assurance |
 | NCRA | National Cancer Registrars Association |
 | NCRI | National Cancer Research Institute |
 | NCRP | National Council On Radiation Protection & Measurements |
 | NCRR | National Center For Research Resources |
 | NCS | National Center For Stuttering |
 | NCS | Neurocritical Care Society |
 | NCSBN | National Council Of State Boards Of Nursing |
 | NCSBS | National Center On Shaken Baby Syndrome |
 | NCSC | National Care Standards Commission |
 | NCSDD | National Community Services Data Dictionary |
 | NCSDR | National Center On Sleep Disorders Research |
 | NCSOS | North Carolina State Optometric Society |
 | NCSRT | North Carolina Society Of Radiologic Technologists |
 | NCT | National Childbirth Trust |
 | NCTR | National Center For Toxicological Research |
 | NCTSN | National Child Traumatic Stress Network |
 | NCVC | National Center For Victims Of Crime |
 | NCVHS | National Committee On Vital And Health Statistics |
 | NCVMA | North Carolina Veterinary Medical Association |
 | NCVO | National Council For Voluntary Organisations |
 | NCYC | National Collection Of Yeast Cultures |
 | NCZVED | National Center For Zoonotic, Vector-Borne, And Enteric Diseases |