| Abbreviation | Definition |
|---|---|
| MNatSc | Master of Natural Science |
| MNursSc | Master of Nursing Science |
| MOcean | Master of Oceanography |
| MOptom | Master of Clinical Optometry |
| MOst | Master of Osteopathy |
| MPhys | Master of Physics |
| MPhysPhil | Master of Physics and Philosophy |
| MPlan | Master of Planning |
| MPP | Matter of Public Policy |
| MProf | Matter of Professional Practice |
| MProfSt | Master of Professional Studies |
| MSci | Master in Science (Master of Natural Sciences at Cambridge) |
| MSci(MGeoSci) | Master in Geoscience |
| MSocSc | Master of Social Science |
| MSSc | Master of Social Science |
| MSt | Master of Studies |
| MStat | Master of Statistics |
| MTheol | Master of Theology |
| MTL | Master of Teaching and Learning |
| MUniv | Master of the University (the MUniv is only ever an honorary degree) |