RIMS
- Current research information system
- Rajendra Institute of Medical Sciences
- Rajiv Gandhi Institute of Medical Sciences (disambiguation)
- Regional Input–Output Modeling System
- Regional Institute of Medical Sciences
- Research Institute for Mathematical Sciences
- Resonance Isolation Mounting System
- Rhein-Main International Montessori School
- Rim (disambiguation)
- Risk and Insurance Management Society
- Rourkela Institute of Management Studies
- Royal Indian Marine