NAC

NAC may refer to:

• Natural Area Code, a proprietary geocode system for identifying an area anywhere on the Earth
• National Agency Check, part of a National Agency Check with Local Agency Check and Credit Check for a U.S. Security Clearance
• North American Confederacy, a fictional government in the novel The Probability Broach by L. Neil Smith

Arts

• National Arts Centre, Canada
• National Arts Council Singapore, a statutory board of the Singapore government
• Narodowe Archiwum Cyfrowe - Polish National Digital Archives

Aviation

• NAC Air, a former Native owned air carrier, Canada
• National Air Communications, a British government organisation 1939-1940
• National Airways Corporation, the former national domestic airline of New Zealand
• Nauru Air Corporation, the national airline of the Pacific island Republic of Nauru
• Naval Aircrewman, United States Navy staff having undergone naval aircraft training
• Nepal Airlines Corporation, national flag carrier of Nepal
• Northern Air Cargo, a cargo airline based in Anchorage, Alaska, USA

Media

• NAC TV, a cable community channel in Neepawa, Manitoba
• Newspaper Agency Corporation, a printing, delivery and advertising company jointly owned by the Deseret Morning News and The Salt Lake Tribune
• New Age/Adult Contemporary, precursor to the Smooth Jazz based radio format

Medicine

• Neuro Associative Conditioning, related to neuro-linguistic programming
• N-Acetylcarnosine, an experimental pharmacological agent for cataract treatment
• N-Acetylcysteine, a pharmacological agent used mainly as a mucolytic
• New Approaches to Cancer, a cancer research association in the United Kingdom
• Nunavut Arctic College, a nursing school in Canada
• Certified Nursing Assistant, or Nursing Assistant Certified, a person who assists individuals with healthcare needs
• Nucleus accumbens

Politics

• National Advisory Council, an advisory body set up to monitor the implementation of the UPA government's manifesto in India
• Naturist Action Committee, the political adjunct to The Naturist Society
• North Atlantic Council, the most senior political governing body of NATO
• Nyasaland African Congress, a political party in Malawi

Religion

• Native American Church, the most widespread indigenous religion among Native Americans
• New Apostolic Church, a chiliastic church
• Pontifical North American College, an American seminary in Rome

Sports

• CA Oradea, Nagyváradi Atlétikai Club, Hungarian name of a Hungarian, Romanian dissolved football club from Oradea (Nagyvárad)
• NAC Breda, a Dutch football club from Breda
• NAC Stadion, a multi-use stadium in Breda, Netherlands
• Nacional Atlético Clube, numbers of Brazilian football teams
• National Aquatic Centre, the home of Irish swimming
• North America Challenge, a laser tag competition in the United States and Canada
• North Atlantic Conference, an athletic conference of the NCAA Division III, made up of colleges in New England, United States

Technology

• Narrow Angle Camera, one of two cameras which form part of the Imaging Science Subsystem in the NASA Cassini orbiter
• Network Access Code, an access feature for public safety radios
• Network Access Control, a piece of technology that controls access to a network
• Network Admission Control, a computer network security device

Companies and organisations

• Nanjing Automobile (Group) Corporation
• National Action Committee on the Status of Women, a Canadian feminist activist organization
• National Academy of Construction
• North Atlantic Conference, an athletic college conference for the New England states of Vermont, Maine, and Massachusetts
• Northern Athletics Conference, an athletic college conference for Illinois and Wisconsin
• Nanjing Automobile (Group) Corporation
• Nowra Anglican College, an Anglican College based in Nowra, Australia
• National Agricultural Centre, now renamed Stoneleigh Park, UK