AACC
- Abe Ani Combat Club
- All Africa Conference of Churches
- All Arms Commando Course
- American Association for Clinical Chemistry
- American Association of Cereal Chemists
- American Association of Community Colleges
- American Automatic Control Council
- Anne Arundel Community College
- Arab American Chamber of Commerce
- Association of Asian Constitutional Courts and Equivalent Institutions
- Australian Army Catering Corps
- Lot Fourteen