NCAC could refer to:
Australia National Cadet Advisory Council, the link between cadets and officers in the Australian Army Cadets National Childcare Accreditation Council, a non-profit organization funded by and accountable to the Australian Government
Poland Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences, an astronomy research institute in Poland
United States National Capital Area Council of the Boy Scouts of America National Coalition Against Censorship Nevada County Arts Council, art council in Nevada County, California, USA North Carolina Arts Council, an organization that provides grants to artists North Coast Athletic Conference, an NCAA Division III athletic conference Northern California Athletic Conference, a former NCAA Division II football conference Northern Combat Area Command, a mainly Sino-American formation that participated in Burma during World War II