| Acronym | Definition |
|---|
| OMRS➣Orders and Medals Research Society (est. 1942; UK) |
| OMRS➣Online Medical Reference System (University of Kansas Medical Center) |
| OMRS➣Olympic Model Railroad Society (Washington) |
| OMRS➣Operations and Maintenance Requirements and Specifications |
| OMRS➣Office of Mental Retardation Services (Department of Mental Health, Mental Retardation and Substance Abuse; Virginia) |
| OMRS➣Oral Mucosa Rating Scale |