| CHA | Cabarrus Health Alliance 
| Others |
| CHA | California Hospital Association
| Others |
| CHA | Cambridge Health Alliance
| Others |
| CHA | Canada Health Act
| Others |
| CHA | Canadian Historical Association
| Others |
| CHA | Canine Hydrotherapy Association
| Others |
| CHA | Capital Homestead Account
| Others |
| CHA | Catholic Health Association
| Others |
| CHA | Central Hinds Academy
| Others |
| CHA | Centrally Heated Air
| Others |
| CHA | Certified HACCP Auditor
| Others |
| CHA | Certified Horsemanship Association
| Others |
| CHA | Certified Hotel Administrator
| Others |
| CHA | Chamorro
| Others |
| CHA | Channel a
| Others |
| CHA | Channel Adapter
| Others |
| CHA | Charger
| Others |
| CHA | Charlotte Hackers Anonymous
| Others |
| CHA | Charlotte Hornets
| Others |
| CHA | Charlotte Housing Authority
| Others |
| CHA | Chassis Only
| Others |
| CHA | Chat (IRC data)
| Others |
| CHA | Chat File
| Others |
| CHA | Chattanooga, Tennessee USA
| Others |
| CHA | Cheerful Help Available
| Others |
| CHA | Chemical Hamiltonian Approach
| Others |
| CHA | Chicago Heart Association
| Others |
| CHA | Chicago Housing Authority
| Others |
| CHA | ChildHelp USA, Inc.
| Others |
| CHA | Christ Hospital Association
| Others |
| CHA | Christian Hackers Association
| Others |
| CHA | Christian Heritage Academy
| Others |
| CHA | Click Here A
| Others |
| CHA | Click Here A**hole
| Others |
| CHA | Cliff Hanger Antenna
| Others |
| CHA | Cluster Health Advisor
| Others |
| CHA | College Hockey America
| Others |
| CHA | Colorado Hospital Association
| Others |
| CHA | Committee on House Administration
| Others |
| CHA | Commonwealth Healthcare Alliance
| Others |
| CHA | Commonwealth Honors Academy
| Others |
| CHA | Community Health Advocates
| Others |
| CHA | Community Health Assessment
| Others |
| CHA | Concentric Hemispherical Analyzer
| Others |
| CHA | Concept Hazard Analysis
| Others |
| CHA | Connecticut Hospital Association
| Others |
| CHA | Craft and Hobby Association
| Others |
| CHA | Craft Hobby Association
| Others |
| CHA | Crafting and Hobby Association
| Others |
| CHA | Crafts and Hobby Association
| Others |
| CHA | Cultural Heritage Alliance
| Others |
| CHA | Culture, Health, and Amenities
| Others |
| CHA | Customs House Agent
| Others |
| CHA | Daihatsu Charade
| Others |