| Acronym | Definition |
|---|
| ACEC➣American Council of Engineering Companies (formerly American Consulting Engineers Council) |
| ACEC➣Advisory Committee on Electromagnetic Compatibility |
| ACEC➣American Consulting Engineers Council (now American Council of Engineering Companies) |
| ACEC➣Areas of Critical Environmental Concern |
| ACEC➣Association of Corporate Executive Coaches |
| ACEC➣Association of Consulting Engineers of Canada |
| ACEC➣Adams Columbia Electric Cooperative (Wisconsin) |
| ACEC➣Advisory Commission on Electronic Commerce |
| ACEC➣Associazione Cattolica Esercenti Cinema |
| ACEC➣Association of Canadian Editorial Cartoonists (est. 1988) |
| ACEC➣Advisory Committee on Electromagnetic Compatibility (International Electrotechnical Commission; Switzerland) |
| ACEC➣Army Communications Electronics Command (now CECOM) |
| ACEC➣Australian Council of Education Centres |
| ACEC➣Ada Compiler Evaluation Capability |
| ACEC➣Armenian Cultural and Educational Center (Watertown, Massachusetts) |
| ACEC➣Acute Critical Effluent Concentration |
| ACEC➣Association Canadienne d'études Cinématographiques (Film Studies Association of Canada) |
| ACEC➣Association Canadienne d'études Cinématographiques |
| ACEC➣Assessment Component of Employment Counselling |
| ACEC➣Alcona County Environmental Coalition (Alcona County, MI) |
| ACEC➣Association Chouala pour l'Education et Culture (Morocco) |