Posted in Health & Medicine, Religion, Schools & Education, Sports ACHA stands for American Collegiate Hockey Association ACHA stands for American College Health Association ACHA stands for American College of Healthcare Architects ACHA stands for Agency for Healthcare Administration (Florida) ACHA stands for Aboriginal Cultural Heritage Act (Australia) ACHA stands for Association for Communal Harmony in Asia ACHA stands for Applied and Computational Harmonic Analysis (mathematical journal) ACHA stands for American Catholic Historical Association (Washington, DC) ACHA stands for Air-Conduction Hearing Aid (device) ACHA stands for Allegheny County Housing Authority (Pittsburgh, PA) ACHA stands for American College of Hospital Administrators