Posted in Business & Finance, Government & Military, Science ACRU stands for American Civil Rights Union ACRU stands for Avionics Cooling Refrigeration Unit (aviation) ACRU stands for Agricultural Catchments Research Unit (University of Natal; South Africa) ACRU stands for American Civil Responsibilities Union (California) ACRU stands for Active Confirmed Registered User (eBay) ACRU stands for Asbestos Contractors Registration Unit (San Francisco, CA)