Souks have undergone functional and spatial changes in the Moroccan medinas since colonial times due to the tourist activities. The rate of the changes increased at the end of the 20th century because of the expansion of tourism projects. However, there are no publications on the evolution of Moroccan souks in the context of tourism development. Therefore, the purpose of this article is to determine the types of transformations the souks underwent as a result of the dynamic development in this sector of economy. The research focused on two imperial cities: Marrakech and Rabat. Data for analysis was obtained through observations and field interviews in 2014 and by bibliographic query. A retrospective study was carried out which included identification of mechanisms affecting the contemporary organization and physiognomy of the commercial streets. The authors’ work allowed for an identification of development phases of the Moroccan souks under the influence of tourism.