Hospital Management System is a computerizing scheme used for simplifying several efforts of the working in a hospital. The system deals with all the requirements of different hospitals to offer efficient health services to patients and employees and related information for long term. In this thesis, web and mobile based applications for two of hospitals in different cities at Iraq (Mergan in Babylon and Ibn-Alnafees in Baghdad) is proposed. The proposed system provides the patients, doctors and related working staff with the ability of performing the required health service in an efficient way. It includes four main parts: built database, optical fiber local area network, designed website and mobile applications.