DBA is the largest department in the School of Business in terms of the areas of specialization and students enrolment. The department currently hosts nine specializations at both under and postgraduate levels namely:
- International Business Management
- Human Resource Management
- Strategic management
The department also offers service courses to various departments in the University of Nairobi.
The department has had 7 chairmen since its inception .
- Prof. Francis N. Kibera: 1986 – 1989
- Prof. Peter K’Obonyo:1989 – 1991
- Mr. Stephen N.M. Nzuve: 1991 – 1994
- Mr. Thomas Mutugu: 1994 - 1996
- Prof. Evans Aosa: 1996 - 2002
- Prof. Martin Ogutu: 2003 – 2009
- Dr. Justus Munyoki: 2009 -2013