RDAC may refer to:
Digital potentiometer, also known as a Resistive Digital-to-Analog Converter Radioactinium, abbreviated RdAc, a name given at one time to 227 Th, an isotope of thorium Rebel Diaz Arts Collective, a community arts center in New York City Redundant Disk Array Controller, a type of computing hardware Roller Derby Association of Canada Randall Davey House and surrounding Randall Davey Audubon Centre Report of the Department of Antiquities, Cyprus, an archaeological journal