| HEAC | Hansen Engineering and Consulting 
| Others |
| HEAC | Happily Ever After Confectionery
| Others |
| HEAC | Health Education Advisory Committee
| Others |
| HEAC | Health Education Advisory Council
| Others |
| HEAC | Health Effects Advisory Committee
| Others |
| HEAC | Health Equity Advisory Committee
| Others |
| HEAC | Health Expenditure Advisory Committee
| Others |
| HEAC | Health Expert Advisory Committee
| Others |
| HEAC | Healthy Eating Active Communities
| Others |
| HEAC | High Energy Astrophysics and Cosmology
| Others |
| HEAC | Higher Education Accreditation Commission
| Others |
| HEAC | Higher Education Accreditation Council
| Others |
| HEAC | Higher Education Admission Center
| Others |
| HEAC | Higher Education Admission Centre
| Others |
| HEAC | Higher Education Advisory Committee
| Others |
| HEAC | Higher Education Advisory Council
| Others |
| HEAC | Hispanic Employee Advisory Committee
| Others |
| HEAC | Historic England Advisory Committee
| Others |
| HEAC | Home and Energy Advice Centre
| Others |
| HEAC | Home Education Advisory Council
| Others |