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