ACDA

ACDA may refer to:
 * Allegheny County District Attorney
 * American Choral Directors Association, a non-profit organization
 * Arms Control and Disarmament Agency, an independent agency
 * Assured Clear Distance Ahead, a fundamental driving principle
 * Atyap Community Development Association, a sociocultural organization of the Atyap people
 * Thomas Acda (born March 6, 1967), television actor