ACN may refer to:
Businesses and organizations Businesses Accenture, professional services company, listed on the NYSE as ACN ACN Inc., multi-level marketing company providing telecommunications and other services Agencia Cubana de Noticias, Cuban state news agency Agencia Carabobeña de Noticias, news agency, Valencia, Venezuela Agència Catalana de Notícies, news agency, Barcelona, Spain American Collectibles Network, former name for Jewelry Television, US Atlantis Cable News, fictional news channel on The Newsroom (American TV series)
Other organizations Action Congress of Nigeria, political party of Nigeria Agenzia per la Cybersicurezza Nazionale, Italian government cybersecurity agency, Italy Aid to the Church in Need, international Catholic charity based in Königstein im Taunus, Germany Andean Community of Nations, free trade area Anglican Communion Network, network of Anglican and Episcopalian dioceses and parishes
Science and technology Acetonitrile, CH3CN Acineta, a genus of orchid Acrylonitrile, CH2CHCN Architecture for Control Networks, network protocol for theatrical control
Sport Africa Cup of Nations, biennial football tournament Hockey Africa Cup of Nations, biennial field hockey tournament: Men's Hockey Africa Cup of Nations Women's Hockey Africa Cup of Nations
Other uses Achang language, a Tibeto-Burman language of China Achnasheen railway station, UK, National Rail code Aircraft Classification Number, pavement load of an aircraft Algebraic notation (chess), the standard notation for recording chess games (Algebraic chess notation) ante Christum natum, seldom-used Latin equivalent of BC Australian Company Number, unique identifier for companies registered in Australia Ciudad Acuña International Airport, Coahuila, Mexico (IATA airport code ACN)