NAC

• National Arts Centre, Canada
• National Arts Club, New York, United States
• National Arts Council, Singapore, a statutory board of the Singapore government
• Narodowe Archiwum Cyfrowe, Polish National Digital Archives
• New adult contemporary, a name once used for the smooth jazz radio format

• NAC Air, a former Native owned air carrier, Canada
• NAC Fieldmaster, British agricultural aircraft
• NAC, the IATA code for Naracoorte Airport in South Australia, Australia
• Namibia Airports Company, operator of eight airports in Namibia
• National Air Communications, a British government organisation 1939–1940
• National Airways Corporation (South Africa), a South African commercial aviation company
• Nauru Air Corporation, the national airline of the Pacific island Republic of Nauru
• Nepal Airlines Corporation, the national airline of Nepal. previously known as RNAC (Royal Nepal Airlines Corporation)
• New Zealand National Airways Corporation, the former national domestic airline of New Zealand
• Northern Air Cargo, a cargo airline based in Anchorage, Alaska, U.S.

• NAC Architecture, a U.S. design firm
• Nanjing Automobile (Group) Corporation, a Chinese subsidiary of SAIC
• Nickel Asia Corporation, largest producer of nickel ore in the Philippines
• Nordic Aviation Capital, Danish based airline lessor
• North American Communications, a defunct U.S. direct mailer

• Nakanihon Automotive College, a private junior college in Sakahogi, Gifu, Japan
• National Academy of Construction, an Indian college
• Nowra Anglican College, an Anglican College based in Nowra, Australia
• Nunavut Arctic College, a nursing school in Canada

• New Administrative Capital, the new capital center being built to replace Cairo as Egypt's government center
• National Aboriginal Conference, Australian governmental body 1973–1985
• National Administrative Council, former governing body of the Independent Labour Party in the UK
• National Advisory Council, an advisory body set up to monitor the implementation of the UPA government's manifesto in India
• New Agenda Coalition, an international group advocating nuclear disarmament
• North Atlantic Council, the most senior political governing body of NATO
• Nyasaland African Congress, a political party in Malawi

• 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, Italy

• National Abortion Campaign, a former UK campaigning group for abortion rights
• National Action Committee on the Status of Women, a Canadian feminist activist organization
• National Agricultural Centre, now renamed Stoneleigh Park, UK

• NAC TV, Neepawa, Manitoba, Canada
• Newspaper Agency Corporation, Salt Lake City, Utah, U.S

• N-Acetylcarnosine, a compound related to carnosine
• N-Acetylcysteine, a medication
• Nucleus accumbens, a region in the brain
• N-Acetyl as in GlcNAc and GalNAc

• Natural Area Code, a geocode system
• Network Access Code, for public safety radios
• Network access control
• Network Admission Control
• North Atlantic Current

• NAC Basketbal, basketball club based in Breda, Netherland
• NAC Breda, football club from Breda, Netherlands
• NAC Stadion, a multi-use stadium in Breda, Netherlands

• Nashville Athletic Club, a sports club for young men in Nashville, Tennessee, U.S.
• North Atlantic Conference, a U.S. collegiate athletic conference based in New England, U.S.
• Northern Athletics Conference, former name of the U.S. collegiate athletic conference based in the Midwest U.S.

• CA Oradea, football club based in Oradea, Bihor County, Romania
• Nacional Atlético Clube (disambiguation), several Brazilian football teams
• National Aquatic Centre, indoor aquatics facility in Blanchardstown, Dublin, Ireland
• Netherlands Antilles Championship, premier association football competition in the Netherlands Antilles (defunct)
• North America Challenge, a laser tag competition in the US and Canada

• Nam Cheong station, of the Mass Transit Railway (MTR), Hong Kong
• New Atlantic Charter, a 2021 agreement between the UK and US
• North America and the Caribbean, see List of country groupings
• North American Confederacy, a fictional government in the novel The Probability Broach by L. Neil Smith
• Notified Area Council or nagar panchayat, one of the three types of urban system in India

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• NACS (disambiguation)
• Knack (disambiguation)
• Nack (disambiguation)
• Nach (disambiguation)
• Nakh (disambiguation)
• Nak (disambiguation)
• naq (disambiguation)
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