ACCC
- A3C (disambiguation)
- AC (disambiguation)
- AC3 (disambiguation)
- ACCC conductor
- Aarhus Convention
- Aarhus Convention
- Adams County Correctional Center
- Alabama Community College Conference
- American Council of Christian Churches
- Anglican Catholic Church of Canada
- Arthur J.E. Child Comprehensive Cancer Centre
- Association of Canadian Community Colleges
- Atlantic Cape Community College
- Australian Centre for Christianity and Culture
- Australian Competition and Consumer Commission
- Hockey Africa Cup for Club Champions
- Hockey Africa Cup for Club Champions (women)