| Rank | Abbreviation | Meaning |
|---|
| ***** | AHDC | Adult Day Health Care
| |
| ***** | AHDC | Al Hamed Development and Construction
| |
| **** | AHDC | Animal Health & Diagnostic Commission
| |
| **** | AHDC | Animal Health Diagnostic Center
| |
| **** | AHDC | Aboriginal Housing Development Committee
| |
| *** | AHDC | Affordable Housing Development Committee
| |
| *** | AHDC | Affordable Housing Development Co
| |
| *** | AHDC | Ad Hoc Disciplinary Committee
| |
| *** | AHDC | Arbor Hill Development Corporation
| |
| *** | AHDC | And Humanities Data Centre
| |
| ** | AHDC | Arts and Heritage Development Council
| |
| ** | AHDC | Aiming High for Disabled Children
| |
| ** | AHDC | Alaska Housing Development Corporation
| |
| ** | AHDC | Ashkelon Hypertension Detection and Control
| |
| * | AHDC | Associates in Human Development Counseling
| |
| * | AHDC | Armenian Humanitarian Demining Center
| |
| * | AHDC | American Hunting Dog Club
| |
| * | AHDC | Arkansas Human Development Corporation
| |
| * | AHDC | Adirondack Hydro Development Corporation
| |
| * | AHDC | American Harness Drivers Club
| |
| * | AHDC | Autonomous Hill Development Council
| |
| * | AHDC | Affordable Housing Development Company
| |
| * | AHDC | Adelaide Hills Dressage Club
| |
| * | AHDC | Alexandria Housing Development Corporation
| |
| * | AHDC | Arlington Historic District Commissions
| |