The Asociación de Cohetería Experimental y Modelista Argentina (ACEMA), also publicly styled Asociación de Cohetería Experimental y Modelista de Argentina, is a nonprofit civil association for safe, legal amateur rocketry. Founded by Argentine model and experimental rocketeers in 2003 and formally recognized under Inspección General de Justicia record 1771428, it promotes model, medium- and high-power, experimental, educational, scientific, technical, and sporting rocketry. ACEMA organizes regular launches and practical workshops; provides launch equipment, safety procedures, member insurance support, and Tripoli Level 1 and 2 certification through Tripoli Argentina Prefecture 151, the first Tripoli prefecture in South America; and runs national education and engineering initiatives including CanSat Argentina and the 2025–2026 Desafío Argentino de Cohetería Experimental. Its legal seat is in the City of Buenos Aires, while launch activity takes place at approved sites around Greater Buenos Aires and its programs engage schools and university teams across Argentina.