| HSAC | Homeland Security Advisory Council | 国土安全咨询委员会 |
| HSAC | Help Stop Animal Cruelty | 帮助制止虐待动物 |
| HSAC | Helicopter Safety Advisory Conference | 直升机安全咨询会议 |
| HSAC | Honors Student Advisory Council | 荣誉学生咨询委员会 |
| HSAC | High School Affiliated Club | 高中附属俱乐部 |
| HSAC | High Speed Access Corporation (delisted) | 高速接入公司（已摘牌） |
| HSAC | Health Services Advisory Committee (UK) | 健康服务咨询委员会（英国） |