| Rank | Abbreviation | Meaning |
|---|
| ***** | MFRS | Manufacturers
| |
| **** | MFRS | Mutual Fund Routing System
| |
| *** | MFRS | Motion for Relief from Stay
| |
| ** | MFRS | Multi-Feedback Reading System
| |
| * | MFRS | Men and Family Relationship Services
| |
| * | MFRS | Maritime Force Requirement Study
| |
| * | MFRS | Mileage and Facilities Reporting System
| |
| * | MFRS | Marine & Fluvial Research Station
| |
| * | MFRS | Mathematical Formalisms in RNA Structure
| |
| * | MFRS | Merseyside Fire and Rescue Service
| |
| * | MFRS | Mean firing rates
| |
| * | MFRS | Michigan Friends Rescue Shelter
| |
| * | MFRS | Many Facets Rock Shop
| |
| * | MFRS | Major Frame Ratio Signal
| |
| * | MFRS | microvascular flow regulating system
| |
| * | MFRS | Metropolitan Fire Restoration Services
| |
| * | MFRS | Maritime Forest Ranger School
| |
| * | MFRS | Mileage Facilities Reporting System
| |