HCOC
| Acronym | Definition |
|---|---|
| HCOC | Hague Code of Conduct Against Ballistic Missile Proliferation |
| HCOC | Hunger Clinic Organizing Committee (Canada) |
| HCOC | Honda Car Owners Club (Malaysia) |
| HCOC | Heritage of the Coptic Orthodox Church |
| HCOC | Hazardous Chemicals of Concern |
| HCOC | History Center of Olmsted County (Rochester, MN) |
| HCOC | Hebrew Culture Organization of Canada |