| Abbreviation | Definition |
|---|---|
| MOM | Man Of the Month |
| Monsignor | Member of the clergy above a pastor; Senior Pastor |
| MOS | Microsoft Office Specialist |
| MOUS | Microsoft Office User Specialist |
| MOVSM | Military Outstanding Volunteer Service Medal |
| MOW | Monster Of the Week |
| MPFPA | MINDEF Physical Fitness Performance Award |
| MQA | Minnesota Quality Award |
| MQA | Missouri Quality Award |
| MR | Mister |
| MRCGP | Membership of the Royal College of General Practitioners |
| MRCP | Membership of the Royal College of Physicians |
| MRCPCH | Membership of The Royal College of Peadiatrics and Child Health |
| MRCR | Membership of The Royal College of Radiologists |
| MRCS | Membership of The Royal College of Surgeons of England |
| MRDA | Mentored Research Development Award |
| MRI | Member of Royal Institution |
| MRLA | Max Reinhardt Literacy Awards |
| MRSM | Member of the Royal Society of Medicine |
| MSM | Meritous Service Medal |