| MRCS | Machinery Repairman Senior Chief Petty Officer 
| Others |
| MRCS | Malaysian Red Crescent Society
| Others |
| MRCS | Maple Ridge Christian School
| Others |
| MRCS | Marathon Residential and Counseling Services
| Others |
| MRCS | Member, Royal College of Surgeons
| Others |
| MRCS | Membership of the Royal College of Surgeons
| Others |
| MRCS | Membership of The Royal College of Surgeons of England
| Others |
| MRCS | Membership of the Royal Colleges of Surgeons
| Others |
| MRCS | Mendenhall River Community School
| Others |
| MRCS | Micro Radio Car Syndicate
| Others |
| MRCS | Milford Regional Counseling Services
| Others |
| MRCS | Military Rehabilitation and Compensation Scheme
| Others |
| MRCS | Mini-Rooter Cutter Set
| Others |
| MRCS | Minority Retirement Confidence Survey
| Others |
| MRCS | Moffett Road Christian School
| Others |
| MRCS | Mongolian Red Cross Society
| Others |
| MRCS | Montessori Regional Charter School
| Others |
| MRCS | Mount Royal Commemorative Services
| Others |
| MRCS | Multi Rate Circuit Switching
| Others |
| MRCS | Myanmar Red Cross Society
| Others |