RMA
- Availability
- MTV Russian Music Awards
- Maintainability
- Medical assistant
- Qiang language
- Radio Manufacturers Association
- Randolph-Macon Academy
- Rate-monotonic scheduling
- Real Madrid CF
- Reedley Municipal Airport
- Reedley, California
- Refusal of medical assistance
- Regional Mobility Authority
- Regionalmedien Austria
- Reichsmarineamt
- Reliability engineering
- Resource Management Act 1991
- Respect for Marriage Act
- Return merchandise authorization
- Revolution in Military Affairs
- Richmond Metropolitan Authority
- Risk Management Agency
- Riverside Metropolitan Museum
- Rocky Mountain Arsenal
- Rogue Music Alliance
- Roma Airport
- Royal Marine Artillery
- Royal Military Academy (disambiguation)
- Royal Musical Association
- Rubber Manufacturers Association
- Rubin Museum of Art
- United States Department of Agriculture