Posted in Engineering, Government & Military, Health & Medicine ACST stands for Australian Central Standard Time (time zone) ACST stands for Acoustic ACST stands for Asymptomatic Carotid Surgery Trial (UK; Medical Research Council) ACST stands for Advisory Council on Science and Technology (Canada, PM) ACST stands for Advanced Contingency Skills Training (US Air Force) ACST stands for Avon Community Swim Team (Indiana) ACST stands for Agni Computer Security Technologies ACST