| Acronym | Definition |
|---|
| NAC➣Network Access Control/Controller |
| NAC➣National Arts Centre (Ottawa, Canada) |
| NAC➣Nevada Administrative Code |
| NAC➣Northern Air Corporation (Vadnais Heights, MN) |
| NAC➣New Apostolic Church |
| NAC➣National Advisory Council |
| NAC➣N-Acetylcysteine |
| NAC➣Not A Citizen |
| NAC➣North American Components (Arrow Electronics) |
| NAC➣National Arts Council |
| NAC➣Network Admission Control (Cisco) |
| NAC➣North Atlantic Council (NATO) |
| NAC➣National Advisory Committee |
| NAC➣Narrow Angle Camera (US NASA) |
| NAC➣Nashville Aquatic Club (Nashville, TN) |
| NAC➣North American College |
| NAC➣Nebraska Avenue Complex (US DHS) |
| NAC➣North Ayrshire Council |
| NAC➣Net Access Corporation |
| NAC➣Nitric Acid Concentration |
| NAC➣North America Construction (Canada) |
| NAC➣National Asthma Council (Australia) |
| NAC➣Naval Academy (US Navy) |
| NAC➣Notified Area Council (urban political unit; India) |
| NAC➣Northern Athletics Conference (Wisconsin) |
| NAC➣National Association of Collectors |
| NAC➣Norwich Arts Centre (UK) |
| NAC➣Network Adapter Card |
| NAC➣Nanjing Automobile Corporation |
| NAC➣Networks and Communications |
| NAC➣Network Admission Control |
| NAC➣Network Access Controller |
| NAC➣National Automotive Center |
| NAC➣National Agency Check |
| NAC➣Needs Assessment Committee (various organizations) |
| NAC➣Noise Abatement Criteria (roadway traffic) |
| NAC➣National Aids Council (WHO) |
| NAC➣Naval Air Center (US Navy) |
| NAC➣Native American Church |
| NAC➣Naturist Action Committee (The Naturist Society) |
| NAC➣Nouveaux Animaux de Compagnie (Lyon, France) |
| NAC➣New Agenda Coalition (various nations) |
| NAC➣National Administrative Council (National Association of Intercollegiate Athletics) |
| NAC➣National Alliance for Caregiving |
| NAC➣National Action Committee (on the Status of Women) |
| NAC➣NASA Advisory Council |
| NAC➣National Archives of Canada |
| NAC➣National Agroforestry Center |
| NAC➣National Automotive Center (US Army) |
| NAC➣National Adjudicatory Council |
| NAC➣National Advertising Campaign |
| NAC➣Network Access Server (Microsoft) |
| NAC➣National ATM (Automated Teller Machine) Council |
| NAC➣North Academic Center (City College of New York) |
| NAC➣Notification Appliance Circuit |
| NAC➣National Accreditation Commission |
| NAC➣Neoadjuvant Chemotherapy |
| NAC➣New Adult Contemporary (music genre) |
| NAC➣National Association of Counties (Washington, DC) |
| NAC➣N-Acetyl Carnosine (cataract treatment) |
| NAC➣National Ability Center (Park City, Utah) |
| NAC➣Nepal Airlines Corporation |
| NAC➣National Adoption Center |
| NAC➣Naphthenic Acid Corrosion (petroleum refining industry) |
| NAC➣Network Applications Consortium |
| NAC➣Nunavut Arctic College (Canada) |
| NAC➣National Asthma Campaign (South Melbourne, VIC, Australia) |
| NAC➣North American Cup (US Fencing Association) |
| NAC➣North Atlantic Current |
| NAC➣National Advocacy Center |
| NAC➣National Amateur Championship (Ogden, UT; dog competition) |
| NAC➣Neighborhood Advisory Council |
| NAC➣Newport Aquatic Center |
| NAC➣National Academy of Construction |
| NAC➣Network Access Code |
| NAC➣National Addiction Centre |
| NAC➣Name Access Control |
| NAC➣Neuro-Associative Conditioning (Anthony Robbins) |
| NAC➣National Acquisition Center (DVA) |
| NAC➣Nursing Assistant Certified |
| NAC➣Novice Agility Certificate (Dog Agility Title) |
| NAC➣National Association of Concessionaires |
| NAC➣Noad Advendo Combinatie (Dutch soccer team) |
| NAC➣Nipple-Areolar Complex (plastic surgery technique) |
| NAC➣National AIDS Clearinghouse (US CDC) |
| NAC➣Network Administration Center |
| NAC➣North American Challenge |
| NAC➣National Aquaculture Council |
| NAC➣Nippon Airship Corporation (Japan) |
| NAC➣National Accreditation Commission for Early Care and Education Programs |
| NAC➣NASA Advisory Committee |
| NAC➣New Accession Countries (initiative; Institution of Occupational Safety and Health) |
| NAC➣Natural Area Codes (geographic coordinates) |
| NAC➣Norwegian Afghanistan Committee |
| NAC➣Network Access Corporation |
| NAC➣National Automobile Club |
| NAC➣Nonprofit Assistance Center (various locations) |
| NAC➣North Atlantic Coast |
| NAC➣National Asbestos Council |
| NAC➣New American Conservatory (Fort Wayne, IN) |
| NAC➣Network Analysis Corporation |
| NAC➣National Association for Continence |
| NAC➣Null Attachment Concentrator |
| NAC➣Nonproliferation and Arms Control |
| NAC➣New Age Contemporary (music category) |
| NAC➣Network Access Computer (Sprint) |
| NAC➣Northport Arts Coalition (Northport, NY) |
| NAC➣National Administrator's Credential |
| NAC➣New Apprentice Centre |
| NAC➣Naval Air Crewman |
| NAC➣Not A Chain |
| NAC➣Northern Air Command (Pakistan Air Force) |
| NAC➣National Association of Cities |
| NAC➣Noritsu America Corporation |
| NAC➣National Agricultural Center (UK) |
| NAC➣National Audience Composition |
| NAC➣Nuveen CA Dividend Advantage Municipal Fund (stock symbol) |
| NAC➣Net Advertising Circulation |
| NAC➣Nostalgic Auto Club (France) |
| NAC➣Network Access Component |
| NAC➣Naval Administrative Command |
| NAC➣Navy Activity Control |
| NAC➣Nippoly America Corporation (Japan) |
| NAC➣NetAbility Corp. |
| NAC➣Neutral Adaptive Controller |
| NAC➣Non-Area Code |
| NAC➣Nishinihon Academy College (Japan) |
| NAC➣Nation of Asiatic Communists |
| NAC➣National Activation Center |
| NAC➣Nußdorfer Athletik Club |
| NAC➣Normal Approach Course |
| NAC➣North American Computers, Inc. |
| NAC➣National Automobile/Automotive Center |
| NAC➣Neutral Access Point |
| NAC➣Naval Avionics/Air Center |
| NAC➣Network Assignment Center (Nortel) |
| NAC➣Navy Acquisition Circular |
| NAC➣Navy Arms Company |
| NAC➣Navy Advanced Concept |
| NAC➣National Association of Commodores |