The student was killed when pro-Morsi protesters clashed with their opponents at Alexandria University, the police in the Mediterranean city said in a statement.
Police said they did not intervene in the clashes but set up a security cordon outside the university.
Morsi's supporters have used campuses as relative safe havens for protests, after a police crackdown on his Muslim Brotherhood killed more than 1,000 people across Egypt following his overthrow in July.
Police had repeatedly denied their involvement in several deaths during campus protests, but protesters accuse them of using lethal force.