The American Civil Defense Association (TACDA) is a member-supported, 501(c)(3) nonprofit, civil defense-focused organization founded in 1962. Its primary focus is to educate its membership on emergencies, both man-made and natural disasters through various resources. The organization operates the free TACDA Academy and prints a periodical called Journal of Civil Defense. TACDA also sells emergency supplies, such as dosimeters, water purification equipment, emergency rations, , and Mettag Triage Tags.
In a letter dated October 19, 1988, then sitting president Ronald Reagan praised the work of TACDA.