ACF

ACF or acf may refer to:

Africa

 * Active Citizen Force, temporary conscripts and volunteers in the South African Army

Asia

 * Adivasi Cobra Force, extremist Santal organisation in Assam
 * Arab Chess Federation
 * Asian Chess Federation

Australia

 * Australian Chess Federation, the governing body for chess in Australia
 * Australian Conservation Foundation, an Australian non-profit organisation promoting ecological sustainability

Europe

 * Action contre la Faim or Action Against Hunger, global humanitarian organization
 * ACF Fiorentina, Associazione Calcio Fiorentina, Italian football club
 * Anti-Corruption Foundation, NGO led by Russian opposition figure Alexei Navalny
 * Army Cadet Force, British youth organisation that offers progressive military training to boys and girls aged 12 to 18
 * Ateliers et Chantiers de France, defunct French shipyard
 * Automobile Club of France, men's club located on Place de la Concorde in Paris

North America

 * Academic Competition Federation, an unincorporated non-profit organization that runs collegiate quizbowl tournaments
 * Administration for Children and Families, the operating unit of the US Department of Health and Human Services
 * Adventist Christian Fellowship, the collegiate ministry of the Adventist church in North America
 * American Car and Foundry Company, a manufacturer of railroad rolling stock since 1899, now known as ACF Industries
 * American Checker Federation, a non-profit organization governing the game of American checkers in the US
 * American Culinary Federation, a professional chefs' organization established in 1929

South America

 * Associação Chapecoense de Futebol, a Brazilian football club

Electronics and computing

 * Access Control Facility, a prototype of the ACF2 third-party security software for IBM OS/VS
 * Advanced Communication Function, a family of products for telecommunications programs on some IBM computers replacing IBM Network Control Program, and ACF/VTAM
 * Anisotropic conductive film, a conductive adhesive system used in the electronics industry
 * Autocorrelation function, a mathematical tool used in signal processing

Medicine

 * ACF (gene), a human gene
 * Aberrant crypt foci, a preneoplastic lesion on the mucosa of the colon or rectum
 * Antecubital fossa, an area on the anterior of the elbow joint of the human arm, and a common site for cannulation
 * Asymmetric crying facies, a minor congenital anomaly

Other sciences

 * 2-Acetylfuran, a substance with a low melting point and a high boiling point
 * African clawed frog, a species of South African aquatic frog of the genus Xenopus
 * Algebraically closed field, an algebraic structure
 * Meade Advanced Coma-Free telescope design

Other uses

 * ACF River Basin, Apalachicola-Chattahoochee-Flint River Basin in the southeastern US
 * Aircraft railway station, station code, Melbourne
 * Saint Lucian Creole French (ISO 639:acf), a French-based creole language spoken in Saint Lucia and Dominica
 * Aral Talim Airport, IATA code ACF