Nine others were injured and taken to the Kingdom Hospital, Obaid Hospital, and National Hospital.
The accident happened Monday morning when a steel scaffolding on one side of the 7-storey University Library collapsed. The scaffolding was set up for marble-tile-setting work on the wall.
The Philippine embassy said that the Saudi Civil Defense office has begun investigation to establish the cause of the accident.
It said it is coordinating with the Saudi Oger company on the medical care extended to the two injured Filipinos.