ACN

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, international Catholic charity based 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