| Acronym | Definition |
|---|
| ORHS➣Oak Ridge High School (USA) |
| ORHS➣Orlando Regional Healthcare System (Orlando, FL) |
| ORHS➣Otay Ranch High School (California; est. 2003) |
| ORHS➣Oyster River High School (Durham, NH) |
| ORHS➣Orrville Railroad Heritage Society (Ohio) |
| ORHS➣Oconee Regional Health Systems (Milledgeville, GA) |