Master of Medicine (MMed) is a postgraduate Professional clinical degree awarded by medical schools to physicians following a period of instruction, supervised clinical rotations and examination. The degree is usually three years, but maybe four years in some countries and is awarded by both surgical and medical subspecialties and usually includes a dissertation component. The degree may complement an existing fellowship in the chosen specialty or be the sole qualification necessary for registration as a specialist.

The advantages of MMed over membership certificated qualifications are that, whilst both groups are clinically competent at their levels, MMed specialist can enrol into a four year PhD plus fellowship and come out as consultants with PhD or do a two year fellowship without PhD. On the other hand, members of various professional colleges only advance to fellowship graduating as non-PhD consultants which distorts their academic ranking as most universities insist on PhD for their teaching staff. Another advantage of MMed is that, it takes fewer years to subspecialise leading to a more youthful and energetic specialists and sub-specialised consultants compared to professional membership which often hold practitioners as 'general specialists' even at fellowship level. It is envisaged that, most professional colleges will soon adopt the MMed and Fellowship/PhD certification system.

The following universities in the following countries award MMed degrees leading to specialists practice in the following subjects, as of May 2009: