HHHS
| Acronym | Definition |
|---|---|
| HHHS | Hunters Hill High School (New South Wales, Australia) |
| HHHS | Hanover Horton High School (Horton, MI) |
| HHHS | Hatboro-Horsham High School (Horsham, PA) |
| HHHS | Herbert Hoover High School |
| HHHS | Hendrick Hudson High School (Montrose, NY) |
| HHHS | Hasbrouck Heights High School (New Jersey) |
| HHHS | Haddon Heights High School (New Jersey) |
| HHHS | Homer Hanna High School (Brownsville, TX) |