Sabri al-Bayati, a professor of telecommunications, was killed on Sunday in the Bab al-Athamiya area in central Baghdad, our correspondent said.
Many academics and intellectuals have been killed since US occupation tanks rolled into Baghdad in April 2003.
More than one year after the US-led war about 2000 professors and academics have fled.
Academics now fear that a deliberate brain drain is being executed through assassinations.
Professors believed to be targeted come from various fields, including science, journalism, political science and even literature.