Despite the existence of a vast number of urban legislation in Egypt; it could be a basis for achieving the goals and plans for sustainable urban development, and creating sound urban environments. However, there are many obvious negative manifestations. A closer look to the growth of Egyptian cities shows the slums, which are still prevalent in the growth of these cities. In addition to, the encroachment of urbanization on the agricultural area, as well as the meager use of space, this hinders the process of sustainable urban development. The research aims to identify the role of urban legislation - especially urban planning legislation and local government legislation - in the process of sustainable urban development in the Egyptian cities. Also, the research aims to discover the deficiencies that led to decrease the legislation effectiveness, and show their direct impacts on sustainable urban development. The research implies five main parts. The first part deals with the introduction, in terms of, the problem, the objectives and methodology of the research. The second part discusses the sustainable urban development in Egypt. The third part emphasizes on the role of urban legislation in sustainable urban development process in Egypt. The fourth part deals with the urban planning legislation in terms of their deficiencies and the most important negative impacts on sustainable urban development. The fifth part discusses the local government legislation in terms of their deficiencies and the most important negative impacts on sustainable urban development.