| HCSA | Haliburton County Snowmobile Association
| Others |
| HCSA | Halifax County Service Authority
| Others |
| HCSA | Hate Crime Statistics Act
| Others |
| HCSA | Health Care and Social Assistance
| Others |
| HCSA | Health Care Services Agency
| Others |
| HCSA | Health Care Spending Account
| Others |
| HCSA | Health Care Systems Administration
| Others |
| HCSA | Health Career Scholars Academy
| Others |
| HCSA | Henderson County Soccer Association
| Others |
| HCSA | Henry County Soccer Association
| Others |
| HCSA | High Country Soccer Association
| Others |
| HCSA | Honors College Student Association
| Others |
| HCSA | Hospital Consultants and Specialists Association
| Others |
| HCSA | Housing Center Student Association
| Others |
| HCSA | Humber Club of South Australia
| Others |