Medicine Baccalaureus & Baccalaureus Chirurgiæ (MB BChir, MB ChB, BM BS, MB BS or variations thereof) are the two degrees awarded after a course in medicine and surgery at a university in the United Kingdom and other places following the British tradition, such as Australian, Hong Kong, Malaysia, Singapore, New Zealand, Jamaican, South African, Pakistan and Indian medical schools.

In theory they are two separate degrees, but in practice the two are usually treated as one. The degrees are the British equivalent of the American M.D.

The basic or degree level qualification for a medical profession is MBBS (Bachelor of Medicine And Bachelor Of Surgery) which is of 5 1/2 years duration (including 1 year internship).