DACS

DACS may refer to:


 * Data & Analysis Center for Software, United States Department of Defense information analysis center
 * De La Rue Automatic Cash System, early ATM
 * Describing Archives: A Content Standard, standard for describing collections
 * Design and Artists Copyright Society, UK copyright collecting society for visual art
 * Digital access and cross-connect system, telecommunications equipment in the United States
 * Digital Access Carrier System, telecommunications equipment in the United Kingdom
 * Distributed Access Control System, single sign-on and role-based access control system
 * Dax, Landes, a town in Nouvelle-Aquitaine, France, known in Occitan as Dacs