Melbourne Business School (MBS) is the graduate business school of the University of Melbourne, Victoria, Australia. The School offers an MBA program, specialist Masters programs, a doctoral program, and executive education programs. The MBS Head Office and main campus are in the Melbourne suburb of Carlton. Walking distance from Melbourne's Central Business District, in a complex designed by Daryl Jackson.

MBS has an additional office in Pitt Street, Sydney, and a program enquiries office in Kuala Lumpur, Malaysia.

MBS began teaching in 1955 when the University of Melbourne offered Australia's first residential executive education program in the summer of that year. In 1965, the same year that Australia's first MBA degree was awarded, it conferred its first Master of Business Administration (MBA) degree.

The Australian Government granted MBS the title of National Management School in the 1980s.
Additionally, the University of Melbourne founded the Graduate School of Management