| Acronym | Definition |
|---|
| ROH | Ring of Honor (wrestling organization) |
| ROH | Royal Opera House |
| ROH | Alcohol (chemistry) |
| ROH | Region of Homozygosity (genomes) |
| ROH | Run of the House (hospitality industry) |
| ROH | Revive Our Hearts (Christian ministry) |
| ROH | Reports of Harm |
| ROH | Royal Ottawa Hospital |
| ROH | Registered Occupational Hygienist |
| ROH | Ranma½ (anime) |
| ROH | River Oaks Hospital (various locations) |
| ROH | Receiver Off-Hook |
| ROH | Radius of Hearing |
| ROH | Removal of Hardware |
| ROH | Regular or Refueling Overhaul (US Navy) |
| ROH | Revoluèní Odborové Hnutí (Czech: Revolutionary Trade Unions) |
| ROH | Ring of Heath (gaming) |
| ROH | Reservations on Hand |