'''ACEC''' may refer to:
*Advisory Committee on Electromagnetic Compatibility, a branch of the International Electrotechnical Commission *American Council of Engineering Companies, a representative of America's engineering industry *Area of Critical Environmental Concern, a program managed by the Bureau of Land Management **Area of Critical Environmental Concern (Massachusetts), a state level land protection program in Massachusetts *Australian Computers in Education Conference, a conference held by the Australian Council for Computers in Education every two years *SA Ateliers de Constructions Electriques de Charleroi, Belgian electrical engineering company founded in 1904, defunct 1989
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