| Acronym | Definition |
|---|
| MRRC➣Michigan Retirement Research Center |
| MRRC➣Mississippi River Research Consortium |
| MRRC➣Magnetic Resonance Research Centre (Cambridge University) |
| MRRC➣Medical Radiological Research Center (Russian Academy of Medical Sciences) |
| MRRC➣Materiel Requirements Review Committee |
| MRRC➣Mohawk River Research Center, Inc |
| MRRC➣Maximum Ratio Receiving Combining |
| MRRC➣Material Resource Recovery Commander |
| MRRC➣Miniaturized Rat-Race Coupler (microwave theory) |
| MRRC➣Mystic River Rugby Club (Malden, MA) |
| MRRC➣Midland Rolls-Royce Club (automobile club; UK) |