| Acronym | Definition |
|---|
| RCSM | Reconfigurable Context Sensitive Middleware |
| RCSM | Regimental Command Sergeant Major |
| RCSM | Regional Climate System Model |
| RCSM | Ranged Combat Support Machine (gaming) |
| RCSM | Department of Recreation and Sport Management (Indiana State University; Terre Haute, IN) |
| RCSM | Rally Club Sandro Munari (sports car enthusiasts' association; Italy) |
| RCSM | Regional Channel Sales Manager (job title) |
| RCSM | Reactor Cladding and Structural Materials |
| RCSM | Royal College of Surgeons Museum (UK) |
| RCSM | Rain City Superhero Movement (Seattle, WA) |