CTSA

CTSA may refer to :


 * Canadian Traditional Scouting Association
 * Cathepsin A is an enzyme which is classified both as a cathepsin and a carboxypeptidase.
 * The Catholic Theological Society of America is a professional association of theologians that was founded in 1946 to promote studies and research in theology within the Catholic tradition.
 * The Channel Tunnel Safety Authority
 * Claire Trevor School of the Arts
 * The Clinical and Translational Science Award program administered by the U.S. National Institutes of Health.