| HSO | Health and Safety Officer | 健康和安全官员 |
| HSO | Healthcare Support Office (United States Navy) | 医疗支持办公室（美国海军） |
| HSO | Health Service Organizations | 卫生服务组织 |
| HSO | Health Service Ombudsman (UK) | 卫生服务监察员（英国） |
| HSO | Health Sciences Online | 健康科学在线 |
| HSO | Human Services Officer | 人力服务官 |
| HSO | Hershey Symphony Orchestra (Hershey, PA) | 好时交响乐团（宾夕法尼亚州好时） |
| HSO | Habitation and Station Operations | 居住和车站运营 |
| HSO | Homeostatic Soil Organism | 稳态土壤生物 |
| HSO | Hot Sports Opinion | 热门体育观点 |
| HSO | Huntsville Symphony Orchestra | 亨茨维尔交响乐团 |
| HSO | Hartford Symphony Orchestra | 哈特福德交响乐团 |
| HSO | Help Sunil Out | 帮助Sunil |