GRIM
| Acronym | Definition |
|---|---|
| GRIM | Grassroots Impeachment Movement |
| GRIM | Glass Refractive Index Measurement |
| GRIM | Gondol Research Institute for Mariculture (Indonesia) |
| GRIM | Guidance, Rationale, and Interoperability Modalities |
| GRIM | Good Riflemen in Motion (gaming clan) |
| GRIM | Global Real-Time Interactive Map (NASA) |