IDSA

IDSA may stand for:


 * Identity School of Acting
 * Industrial Designers Society of America
 * Infectious Diseases Society of America
 * Interactive Digital Software Association, former name of the Entertainment Software Association
 * Institute for Defence Studies and Analyses
 * International Dark-Sky Association (whose formal acronym is actually IDA)
 * International Diving Schools Association
 * Manohar Parrikar Institute for Defence Studies and Analyses (MP-IDSA)